Test 5 Ch 17 Flashcards
What is the correct conversion for the improper fraction ?
a. 7
b. 8
c. 7.79
d. 79.7
ANS: B
Divide the numerator by the denominator. The correct conversion for the improper fraction is 8.
Which of the following fractions is the largest?
a. 3/4
b. 1/4
c. 1/2
d. 1/8
ANS: A
The smaller the denominator, the larger the fraction.
Which of the following fractions is the smallest?
a. 1/8
b. 1/4
c. 1/2
d. 3/4
ANS: A
The larger the denominator, the smaller the fraction.
What is the product of 1/2 x 3/4?
a. 3/8
b. 4/5
c. 2/3
d. 1/4
ANS: A
Multiply the numerators. Multiply the denominators. The first step when multiplying fractions is to multiply the two numerators. The second step is to multiply the two denominators. Finally, simplify the new fractions. The fractions can also be simplified before multiplying by factoring out common factors in the numerator and denominator.
What is 3/8 divided by 1/4?
a. 1 1/2
b. 11/3
c. 13/4
d. 12/3
ANS: B
Write the problem down correctly, invert the second number, and multiply.
3/8 divided by = 3/8 x 4/1 = 12/8 = 3/2 or 11/3
What is 2.34 + 0.77?
a. 0.01
b. 90.4
c. 2.417
d. 3.11
ANS: D
Align the decimal point of each decimal fraction in a column and add.
What is 6.147 rounded to the nearest tenth?
a. 6.2
b. 6.15
c. 6.14
d. 6.1
ANS: D
A subsequent number that is 5 or larger can increase the previous number by one whole number. A subsequent number that is less than 5 will leave the number unchanged.
What is 2.5 x 2?
a. 1.25
b. 5
c. 50
d. 22.5
ANS: B
When multiplying, decimal points do not have to be aligned. The decimal point in the answer is determined by the number of decimal points found to the right of the decimal point in the numbers multiplied.
What is 4.5 divided by 3?
a. 0.75
b. 1.5
c. 5
d. 0.66
ANS: B
In the divisor, move the decimal point all the way to the right and move the decimal point in the dividend the same number of places as moved in the divisor.
What is 0.9% expressed as a decimal? a. 9
b. 0.9
c. 0.09
d. 0.009
ANS: D
Remove the % and move the decimal point two places to the left.
What is expressed as a percent?
a. 50%
b. 20%
c. 10%
d. 5%
ANS: B
Change a fraction to a percent by dividing the numerator by the denominator and multiplying by 100.
Which is the same ratio as 2:100?
a. 1:50
b. 5:300
c. 1:20
d. 4:25
ANS: A
The value of a ratio is not changed if both sides are multiplied or divided by the same number.
The medication order reads “Ibuprofen 600 mg PO tid.” The bottle is labeled “Ibuprofen 200 mg/tab.” How many tablets should the nurse administer?
a. 1
b. 2
c. 3
d. 6
ANS: C
Desired dose over available dose times the unit. The unit is what the available dose is contained in.
The health care provider has ordered furosemide 20 mg stat. The ampule is labeled 40 mg/mL. What dose should the nurse administer?
a. 0.8 mL
b. 0.5 mL
c. 2.0 mL
d. 8.0 mL
ANS: B
Desired dosage over the available dosage times the unit. The unit is what the available dosage is contained in.
0.5 L is equal to how many mL?
a. 0.0005 mL
b. 0.05 mL
c. 50 mL
d. 500 mL
ANS: D
Big to small, move decimal point three places to the right.