Healthcare Math Flashcards

1
Q

Convert 30 g to milligrams

A

30,000 mg

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2
Q

Convert 6.5 in to centimeters

A

16.25 cm

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3
Q

75 mL = _____ L

A

0.075 L

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4
Q

Convert 5 fl oz to milliliters

A

150 mL

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5
Q

Convert 60 mL to tablespoons

A

4 T

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6
Q

Convert 80 kg to pounds

A

176 lb

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7
Q

A liter is the metric base unit of measure for _____

A

volume

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8
Q

What mnemonic device can be used to remember the order of metric units?

A

King Harry Died from a Disease Called Malaria

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9
Q

An infant’s head circumference is 40 cm. The measurement in inches is _____

A

16 in

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10
Q

Convert 286 pounds to kilograms

A

130 kg

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11
Q

The doctor prescribed 30 mL of medication per dose. How many tablespoons should be taken per dose?

A

2 T

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12
Q

The doctor prescribed 10 mL of Betadine concentrate in 480 mL of water. How should the patient prepare the solution?

A

Mix 2 teaspoons of Betadine concentrate in 2 cups of warm water

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13
Q

The total quantity of saline solution on hand is 11 liters 750 milliliters. How many liters need to be ordered to have a total of 40 liters?

A

28.25 L

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14
Q

How many 0.5 mL polio injections can be prepared from 400 mL of vaccine?

A

800 polio injections

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15
Q

If there is 1 liter 650 milliliters of cleaning solution in each of the eight examination rooms, how many liters of cleaner are there in all?

A

13.2 L

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16
Q

0.7097222222222221

A
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17
Q

Sat Feb 8

A
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18
Q

.. •

A
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19
Q

a www2.iccb.org

A
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20
Q

= 89% С

A
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21
Q

14 of 15

A
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22
Q

Worksheet 3: Inventory Calculations with Metric Units

A
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23
Q

Answer Key

A
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24
Q

Questions 1 and 2: Sam counted 12 liters of hand sanitizer in the storage cabinet. He fills the

A
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25
Q

dispensers in seven of the examination rooms as follows: 350 mL

A

600 mL

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26
Q

650 mL

A

720 mL and 500 mL.

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27
Q
  1. How many total milliliters did Sam use to fill the dispensers?
A
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28
Q

3875 mL

A
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29
Q
  1. After filling the dispensers
A

how many liters of sanitizer remain in the storage cabinet?

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30
Q

3875 mL = 3.875 L

A

12 - 3.875 = 8.125 L

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31
Q
  1. Sam helped you prepare 35 sets of injections of dopamine for the clinic this week. Each
A
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32
Q

injection is 50 milliliters. How many liters of dopamine did the clinic use this week?

A
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33
Q

35 × 50 = 1750 mL = 1.75 L

A
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34
Q
  1. The clinic used 9 liters 450 milliliters of saline solution during the last 4 weeks. On average
A
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35
Q

how many milliliters of saline solution does the clinic use each week?

A
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36
Q

9 L = 9000 mL

A

9450 ÷ 4 = 2362.5 mL

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37
Q
  1. Sam restocked 275 mL of children’s ibuprofen in six of the exam rooms. What is the total
A
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38
Q

amount of children’s ibuprofen he used in liters?

A
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39
Q

275 x 6 = 1650 mL = 1.65 L

A
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40
Q

Questions 6 and 7: The clinic has 3 liters of flu vaccine on hand. Each flu shot consists of 5 milliliters

A
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41
Q

of the vaccine.

A
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42
Q
  1. Sam needs to know how many 5 milliliter flu injections he can get from the 3 liter container.
A
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43
Q

3 L = 3000 mL

A

3000 ÷ 5 = 600 flu injections

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44
Q
  1. If the clinic gives 350 flu shots this week
A

how many liters of the vaccine will be left?

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45
Q

350 x 5 mL/shot = 1750

A

3000 - 1750 = 1250 mL = 1.25 L

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46
Q
  1. Sam needs to refill the ammonium solution dispenser in one of the exam rooms with 1 liter
A
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47
Q

275 milliliters of the solution. If he fills the dispenser from a 6-liter container

A

how many liters

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48
Q

of ammonium solution will be left in the container?

A
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49
Q

6 - 1.275 = 4.725L

A
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50
Q

Questions 9 and 10: The clinic uses about 15 liters and 500 milliliters of disinfectant cleaner each

A
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51
Q

month.

A
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52
Q
  1. How many liters of disinfectant does the clinic use in 6 months?
A
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53
Q

500 mL = .5 L

A

15.5 x 6 = 93 L

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54
Q
  1. After taking inventory
A

Sam found there was 32.5 liters of disinfectant cleaner in the supply

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55
Q

cabinet. How many liters of disinfectant cleaner should Sam order so that the clinic will have

A
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56
Q

a 6-month supply?

A
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57
Q

93 - 32.5 = 60.5 L

A
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58
Q

14

A
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59
Q

Quir: Ileina tha Matric Cuetam

A
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60
Q

Anewer Kay

A
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61
Q

0.7097222222222221

A
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62
Q

Sat Feb 8

A
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63
Q

•.•

A
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64
Q

a www2.iccb.org

A
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65
Q

89% C

A
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66
Q

13 of 15

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67
Q

Worksheet 2: Converting Measurements

A
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68
Q

Write the abbreviation or term as indicated for each of the following.

A
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69
Q
  1. pint _
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70
Q

_pt

A
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71
Q
  1. pound
A
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72
Q

Ib

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73
Q
  1. drops
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74
Q

gtts

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75
Q
  1. T_
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76
Q

tablespoon

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77
Q
  1. at quart
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78
Q
  1. floz _fluid ounce.
A
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79
Q

Answer Key

A
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80
Q

Complete the following equivalencies.

A
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81
Q
  1. 1 kg = _
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82
Q

2.2

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83
Q
  1. 1 fl oz =
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84
Q

30

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85
Q

_mL

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86
Q

Complete the following prportions.

A
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87
Q
  1. 8 oz
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88
Q

16 T

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89
Q

1.5 oz

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90
Q

3 T

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91
Q
  1. 1 in =-
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92
Q

2.54

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93
Q
  1. 1 cup = 240
A
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94
Q

_ cm

A
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95
Q
  1. 1 fl oz =
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96
Q

30 mL

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97
Q

4 fl oz

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98
Q

120 mL

A
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99
Q

Solve the following problems. Round your answers to the nearest tenths place

A

if necessary.

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100
Q
  1. A patient voids 150 mL into the specimen cup. How many fluid ounces is this?
A
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101
Q

5 fl oz

A
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102
Q

Questions 14 - 15: Sam weighed and measured an infant at the clinic today. The baby weighed 8.5

A
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103
Q

kg and was 60.5 cm long. The baby’s mother wanted to know the baby’s weight in pounds and length

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104
Q

in inches.

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105
Q
  1. The baby weighs
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106
Q

18.7

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107
Q

Ib.

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108
Q
  1. The baby’s length is
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109
Q

24.2

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110
Q

in.

A
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111
Q
  1. A patient received stitches for a laceration that was 5 inches long. Sam needs to record the
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112
Q

length in centimeters in his chart. The wound is 12.5 cm long.

A
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113
Q
  1. A child threw up 2 cups of fluid in the examination room. How many mL is this?
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114
Q

480 mL

A
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115
Q

Questions 18 - 20: Sam gave the mother of the sick child a 16 oz bottle of liquid medication and told

A
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116
Q

her the child should take 30 mL twice a day.

A
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117
Q
  1. How many tablespoons is one dose?
A
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118
Q

2T

A
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119
Q
  1. How many total mL will the child take in one day?_60 mL How many ounces is this?
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120
Q
  1. How many days will the bottle of medication last?
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121
Q

8 days

A
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122
Q

2 fl oz

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123
Q

13

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124
Q

Worksheet 3: Inventory Calcuatons wun were unis

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125
Q

Answer Kev

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126
Q

0.7097222222222221

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127
Q

Sat Feb 8

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128
Q

• ..

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129
Q

a www2.iccb.org

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130
Q

0.89

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131
Q

12 of 15

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132
Q

Worksheet 1: Metric Measurements & Conversions

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133
Q

Give the metric prefix for the following parts of the base units.

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134
Q
  1. 0.001
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135
Q

milli

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136
Q
  1. 0.01
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137
Q

centi

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138
Q
  1. 0.000001 micro
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139
Q
  1. 1000
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140
Q

kilo

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141
Q

Identify the metric base unit for the following.

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142
Q
  1. Length
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143
Q

meter

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144
Q
  1. Volume
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145
Q

liter

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146
Q

Write the correct abbreviation for each of the following units.

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147
Q
  1. kilogram
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148
Q

kg

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149
Q
  1. liter _
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150
Q
  1. millimeter_mL
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151
Q
  1. meter.
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152
Q

m

A
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153
Q
  1. milligram_mg
A
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154
Q
  1. centimeter_cm
A
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155
Q

Which is larger? Circle the correct answer.

A
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156
Q
  1. milligram or kilogram
A
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157
Q
  1. centimeter or millimeter
A
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158
Q

Convert the following as indicated.

A
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159
Q
  1. 4500 mL =
A
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160
Q

4.5

A
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161
Q
  1. 2.5 g =
A
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162
Q

2500

A
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163
Q
  1. 500 mg = _
A
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164
Q

0.5

A
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165
Q
  • 9
A
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166
Q
  1. 40.5 cm =_405
A
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167
Q
  1. 0.04 L =
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168
Q

40

A
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169
Q

_mL

A
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170
Q
  1. 3 mg =
A
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171
Q

3000

A
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172
Q
  1. 800 mL =
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173
Q

0.8

A
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174
Q
  1. 1.2 g = _
A
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175
Q

1200

A
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176
Q
  1. 2 kg =
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177
Q

2000

A
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178
Q
  1. 1.5 L =
A
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179
Q

1500

A
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180
Q

Answer Key

A
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181
Q
  1. Weight gram
A
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182
Q
  1. gram_g
A
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183
Q
  1. microgram_mcg
A
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184
Q
  1. milliliter or liter
A
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185
Q

mg

A
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186
Q

mm

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187
Q

mcg

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188
Q

_ mg

A
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189
Q

mL

A
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190
Q

Questions 29 & 30: The doctor prescribes 500 mg of Amoxicillin to be taken 4 times per day.

A
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191
Q
  1. What is the maximum number of milligrams per day? 2000 mg
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192
Q
  1. What is the maximum number of grams per day?
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193
Q

2 g

A
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194
Q

12

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195
Q

5:01 PM Sat Feb 8

A
196
Q

• • •

A
197
Q

@ www2.iccb.org

A
198
Q

0.89

A
199
Q

9 of 15

A
200
Q

Activity 3: Inventory calculations using metric measurements

A
201
Q

One of Sam’s responsibilities is to help maintain the inventory of medications and supplies used at

A
202
Q

the clinic. He frequently works with metric units of liters (L) and milliliters (mL) to perform these tasks.

A
203
Q

Memorizing the equivalency

A

1 L = 1000 mL

204
Q

more efficiently.

A
205
Q

When converting liters to milliliters

A

you may use the shortcut method of moving the decimal point

206
Q

three places to the right

A

or you may multiply by 1000. For example

207
Q

Kilo——Hecto——Deca—–[liter]-

A
208
Q

-Deci-

A
209
Q

–Centi——Milli

A
210
Q

3.5 L = 3500 mL

A
211
Q

When converting milliliters to liters

A

you may use the shortcut method of moving the decimal point

212
Q

three places to the left

A

or you may divide by 1000. For example

213
Q

7000 mL =7L

A
214
Q

Convert the following measurements as indicated.

A
215
Q

4500 mL =

A
216
Q

L

A
217
Q

8.5 L =

A
218
Q

_mL

A
219
Q

10000 mL =

A
220
Q

L

A
221
Q

Inventory tasks at the clinic involve adding

A

subtracting

222
Q

Work through these examples with Sam.

A
223
Q

4L 750 mL

A
224
Q

10000 mL

A
225
Q

+ 2L 650 mL

A
226
Q
  • 3400 mL
A
227
Q

6 L 1400 mL = 7.4L

A
228
Q

6600 mL = 6.6 L

A
229
Q

2L 300 mL

A
230
Q
  • 8L 1200 mL = 9.2 L
A
231
Q

1750 mL_ = 7 vials

A
232
Q

250 mL/vial

A
233
Q

Help Sam work the following problems

A

simplifying your answers as indicated.

234
Q

5 L 250 mL

A
235
Q

+ 8L 950 mL

A
236
Q

=

A
237
Q

8500 mL

A
238
Q
  • 750 mL
A
239
Q

=

A
240
Q

4L 250 mL

A
241
Q

X_

A
242
Q

=

A
243
Q

6500 mL =

A
244
Q

_btl

A
245
Q

500 mL/btl

A
246
Q

On Thursday morning

A

the office manager told Sam she needed to know how many liters of saline

247
Q

solution the clinic has on hand. Sam counted 6 liter containers in the storage cabinet and 6 vials

A
248
Q

containing 350 mL each of saline solution in the patient examination rooms. Since the office manager

A
249
Q

needed the amount in liters

A

Sam followed these steps:

250
Q

Step 1: Multiply 350 x 6 =

A
251
Q

mL

A
252
Q

Step 2: Convert the mL from step 1 into liters:

A
253
Q

Step 3: Add the liters from step 2 to 6 liters to get the total: 6 L +

A
254
Q

L=

A
255
Q

_L on hand.

A
256
Q

9

A
257
Q

Worksheet 3: Inventory Calculations with Metric Units

A
258
Q

Name:

A
259
Q

5:01 PM Sat Feb 8

A
260
Q

..•

A
261
Q

a www2.iccb.org

A
262
Q

0.89

A
263
Q

7 of 15 lout 2:

A
264
Q

Customary Household Measurements

A
265
Q

Unit

A
266
Q

Abbreviation

A
267
Q

drops

A
268
Q

gtts

A
269
Q

teaspoon

A
270
Q

tablespoon

A
271
Q

T

A
272
Q

ounce (fluid)

A
273
Q

fl oz

A
274
Q

cup

A
275
Q

pint

A
276
Q

cup

A
277
Q

pt

A
278
Q

quart

A
279
Q

qt

A
280
Q

ounce (weight)

A
281
Q

oz

A
282
Q

pound

A
283
Q

Ib

A
284
Q

inches

A
285
Q

feet

A
286
Q

Lyard

A
287
Q

ft

A
288
Q

yd

A
289
Q

Equivalents

A
290
Q

1 t = 60 gtts

A
291
Q

1 T = 3t

A
292
Q

1 fl oz = 2 T

A
293
Q

1 cup = 8 fl oz

A
294
Q

1 pt = 2 cups = 16 fl oz

A
295
Q

1 qt = 2 pt = 4 cups = 32 fl oz

A
296
Q

16oz = 1 lb

A
297
Q

12 in = 1 ft

A
298
Q

1 yd = 3 ft = 36 in

A
299
Q

Approximate Equivalents

A
300
Q

1 t = 5 mL = 60 gtts

A
301
Q

1 T = 3 t = 15 mL = ½ fl oz

A
302
Q

1 fl oz = 30 mL = 6 t

A
303
Q

1 L = 1 qt = 32 fl oz = 2 pt = 4 cups

A
304
Q

1 pt = 16 fl oz = 2 cups

A
305
Q

1 cup = 8 fl oz = 240 mL

A
306
Q

1 kg = 2.2 lb

A
307
Q

1 in = 2.5 = cm

A
308
Q

7

A
309
Q

Worksheet 2: Converting Measurements

A
310
Q

Write the abbreviation or term as indicated for each of the following.

A
311
Q

Name:

A
312
Q

5:01 PM Sat Feb 8

A
313
Q

•••

A
314
Q

a www2.iccb.org

A
315
Q

89% C

A
316
Q

6 of 15

A
317
Q

nouvity 2: US Customary Measurements & Converting between Systems

A
318
Q

You tell Sam that he will also need to learn some customary household measurements and their

A
319
Q

equivalents. Although these measurements are seldom used in a medical setting

A

they are

320
Q

sometimes used when giving patients instructions for administering medications at home. You give

A
321
Q

Sam a copy of Handout 2. Chart one has a list of some customary household measurements with

A
322
Q

their abbreviations and equivalents. Chart two has a list of customary measurements with their

A
323
Q

approximate metric equivalents. Unlike metric units

A

household measurements are not based on the

324
Q

decimal system. Therefore

A

other methods must be used to convert these units of measurement.

325
Q

One method to convert customary units of measurement is to use a proportion. A proportion is two

A
326
Q

equal ratios. A ratio is a fraction that makes a comparison between two numbers. For example

A

you

327
Q

need to know how many tablespoons (T) are equal to 3 fluid ounces (fl oz). If you look at the

A
328
Q

equivalency chart

A

you find that 1 fl oz = 2 T. Use this information to set up a proportion. To solve a

329
Q

proportion

A

cross multiply and solve for x

330
Q

units across from each other when setting up a proportion.

A
331
Q

1 floz = 3floz

A
332
Q

2T

A
333
Q

XT

A
334
Q

Cross multiply → (1)x = (2)(3) → Solve: x = 6 → 3 fl oz = 6 T

A
335
Q

How many cups are equal to 24 ounces? Set up a proportion to calculate the number of cups.

A
336
Q

8fl oz

A
337
Q

1 сир

A
338
Q

24 fl oz

A
339
Q

x cups

A
340
Q

→ (8)x= (1)(24) →

A
341
Q

8x = 24 → x= 24 ÷ 8

A
342
Q

• 24 oz =

A
343
Q

_cups

A
344
Q

You can also use the proportion method to convert units between measurement systems.

A
345
Q

One of the clinic doctors gives a patient a bottle of liquid medication with orders to take 45 mL three

A
346
Q

times a day. You tell Sam he will need to calculate the number of tablespoons the patient needs to

A
347
Q

take for one dose of the medication. Sam uses the equivalency of 1 T = 15 mL from the chart to set

A
348
Q

up a proportion and calculate the correct number of tablespoons per dose.

A
349
Q

45 mL → 15(x) = (1)(45) → 15x=45 → x=45 ÷ 15 → 45 mL = _

A
350
Q

The doctor is prescribing medication for a patient based on weight in kilograms. The patient weighs

A
351
Q

250 pounds. You tell Sam to use a proportion and convert the patient’s weight into kilograms

A
352
Q

rounding to the nearest tenths place

A

if necessary. 250 lb =_

353
Q

_kg

A
354
Q

Some problems will require multiple conversions and steps. Example: A child is taking 24 mL of

A
355
Q

medication 4 times per day. If the full bottle contains 16 fluid ounces of the medication

A

how many

356
Q

days will the bottle last?

A
357
Q

Step 1: Calculate the total mL per day. 24 mL/dose x 4 times per day = 96 mL/day

A
358
Q

Step 2: Convert 96 mL into ounces.

A
359
Q

1 floz

A
360
Q

26102 → 30x= 96=

A
361
Q

→ 96 ÷ 30 = 3.2 fl oz/day

A
362
Q

Step 3: Calculate the number of days a 16 fl oz bottle will last if 3.2 fl oz/day are taken.

A
363
Q

3.2 floz =

A
364
Q

16 floz

A
365
Q

1 day

A
366
Q

x days

A
367
Q

→ 3.2x = 16 =

A
368
Q

→ 16 ÷ 3.2 =

A
369
Q

_days

A
370
Q

6

A
371
Q

Handout 2:

A
372
Q

5:01 PM Sat Feb 8

A
373
Q

•.•

A
374
Q

8 www2.iccb.org

A
375
Q

4 of 15

A
376
Q

Handout 1

A
377
Q

Metric measurement chart

A
378
Q

Prefix

A
379
Q

Kilo-

A
380
Q

Hecto-

A
381
Q

Deca-

A
382
Q

Base Unit

A
383
Q

Deci-

A
384
Q

Centi-

A
385
Q

Milli-

A
386
Q

Weight

A
387
Q

kilogram

A
388
Q

gram

A
389
Q

milligram

A
390
Q

Volume

A
391
Q

kiloliter

A
392
Q

liter

A
393
Q

deciliter

A
394
Q

milliliter

A
395
Q

Length

A
396
Q

kilometer

A
397
Q

meter

A
398
Q

centimeter

A
399
Q

millimeter

A
400
Q

Value to

A
401
Q

Base

A
402
Q

1000

A
403
Q

100

A
404
Q

10

A
405
Q

1

A
406
Q

0.1

A
407
Q

0.01

A
408
Q

0.001

A
409
Q

The most common prefixes and values used in healthcare are highlighted in yellow.

A
410
Q

Another common healthcare prefix is micro = one millionth or 0.000001 of the base unit

A
411
Q

One way to remember the order of metric units for conversions is to use a mnemonic device such as:

A
412
Q

King

A
413
Q

Kilo

A
414
Q

Harry

A
415
Q

hector

A
416
Q

Died

A
417
Q

deca

A
418
Q

from a

A
419
Q

Disease

A
420
Q

(base)

A
421
Q

deci

A
422
Q

Called

A
423
Q

centi

A
424
Q

Malaria

A
425
Q

milli

A
426
Q

Common healthcare metric units with abbreviations and equivalents

A
427
Q

Unit

A
428
Q

Abbreviation

A
429
Q

Equivalents

A
430
Q

Weight

A
431
Q

gram (base unit)

A
432
Q

milligram

A
433
Q

microgram

A
434
Q

kilogram

A
435
Q

mg

A
436
Q

mcg

A
437
Q

kg

A
438
Q

1 g = 1000 mg = 1

A

0

439
Q

0.001 g = 1 mg = 1

A

000 mcg

440
Q

0.000001 g = 0.001 mg = 1mcg

A
441
Q

1 kg = 1000 g

A
442
Q

Volume

A
443
Q

liter (base unit)

A
444
Q

deciliter

A
445
Q

milliliter

A
446
Q

L

A
447
Q

dL

A
448
Q

mL

A
449
Q

1 L = 1000 mL

A
450
Q

0.1 L = 1 dL

A
451
Q

0.001 L = 1 mL

A
452
Q

Length

A
453
Q

meter (base unit)

A
454
Q

centimeter

A
455
Q

millimeter

A
456
Q

m

A
457
Q

cm

A
458
Q

mm

A
459
Q

1 m = 100 cm = 1000 mm

A
460
Q

0.01 m = 1 cm = 10 mm

A
461
Q

0.001 m = 0.1 cm = 1 mm

A
462
Q

4

A
463
Q

0.89

A
464
Q

5:01 PM Sat Feb 8

A
465
Q

• ••

A
466
Q

• www2.iccb.org

A
467
Q

0.89

A
468
Q

3 ot 15

A
469
Q

Workplace Scenario:

A
470
Q

You are a medical assistant working at a clinic in a large metropolitan area. Currently

A

you are

471
Q

training Sam

A

a new employee who has just joined the staff. Sam is taking classes in order to

472
Q

prepare for admission to the medical assistant program at a local community college. You are

A
473
Q

helping Sam learn some of the skills he will need as a medical assistant.

A
474
Q

Activity 1: Understanding the metric system

A
475
Q

This week

A

you are teaching Sam about the metric system of measurement. You give him a copy of

476
Q

Handout 1 to help him learn about the metric system

A

the most widely used measurement system in

477
Q

the world. In addition

A

it is the primary system of measurement used in the medical field. The metric

478
Q

system is based on powers of 10 and there are three base units:

A
479
Q

The gram (g) is the metric base unit of weight.

A
480
Q

The liter (L) is the metric base unit for volume.

A
481
Q

The meter (m) is the metric base unit for length.

A
482
Q

You tell Sam that he will need to be able to convert units of measurement within the metric system.

A
483
Q

He will also need to learn the correct abbreviations for the most commonly used measurement units.

A
484
Q

The first chart on Handout 1 shows the relationship between the units of metric measurement. From

A
485
Q

left to right

A

the units are in order from largest to smallest. Using a mnemonic device

486
Q

Harry died from a disease called malaria

A

” will help Sam remember the order. The second chart on
Handout 1 shows some common metric units with their abbreviations and equivalencies.
A short cut method to convert from one metric unit to another is to draw a line and label it with the
prefixes, as shown below; you can then write in the base you are working with: gram, liter, or meter.
Kilo——Hecto——Deca—–[base]——Deci——Centi——Milli
Next, draw an arrow from the prefix you are starting with to the prefix you want to convert to, stopping
and counting each prefix as you go. This is the number of places and direction you move the decimal
point in your starting number. To change from a larger unit to a smaller unit, move the decimal point
to the right. For example, to convert 5 kilograms into milligrams, you would move the decimal point
six places to the right, as shown in the diagram below.
Kilo—Hecto–Deca–gram—Deci-Centi—-Milli
5 kg = 5,000,000 mg
To change from a smaller unit to a larger unit, you move the decimal point to the left. If you want to
convert 2500 milliliters into liters, you would move the arrow (decimal point) three places to the left.
Kilo—-Hecto—-Deca—–liters—-Deci–Centi——Milli
2500 mL = 2.5 L
Note: As you move the decimal point to the right, you are actually multiplying by a power of 10 and
as you move the decimal point to the left, you are dividing by a power of 10.
5 kg x 1,000,000 = 5,000,000 mg
and
2500 mL ÷ 1000 =
2.5 L_
3