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CBEST Math > Math :) > Flashcards

Math :) Flashcards

1
Q

How do you find 10% of a number?

A

Move the decimal point ONE place value to the left. E.g., 10% of 523 = 52.3

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2
Q

How do you find 1% of a number?

A

Move the decimal point TWO place values to the left. E.g., 1% of 523 = 5.23

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3
Q

What is the formula for probability?

A

of desired outcomes/total # of outcomes

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4
Q

What is the percent change formula?

A

difference/original amount

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5
Q

What is the circumference formula? (circles)

A

2πr, or πd

r=radius; d=diameter

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6
Q

How many degrees make up a circle?

A

360 degrees

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7
Q

How many degrees make up a triangle?

A

180 degrees

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8
Q

How many week are in one year?

A

52 weeks

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9
Q

How many quarts are in one gallon?

A

4 quarts

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10
Q

How many pints are in one quart?

A

2 pints

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11
Q

How many cups are in one pint?

A

2 cups

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12
Q

How many pounds are in one ton?

A

2,000 lbs

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13
Q

How many inches are in one foot?

A

12”

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14
Q

How many feet are in one yard?

A

3’

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15
Q

How many inches are in one yard?

A

36”

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16
Q

How many ounces are in one pound?

A

16oz

17
Q

Draw the ratio box.

A 
a                b              Whole
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Ratio (parts)
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Multiply by 
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Actual #
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
18
Q

Draw the average circle

A

Total
_______________
number X average

19
Q

Explain or demonstrate the Bowtie Method

A

1 3 13
– + – = –
3 4 12

  1. Cross multiply and write the products above each numerator.
  2. Add (or multiply, or divide, depending on the sign) the two products together
  3. Multiply the two demonators (ALWAYS multiply the denominators)
20
Q

What is this fraction in decimal form? In percent form?

1/100

A

.01

1%

21
Q

What is this fraction in decimal form? In percent form?

1/5

A

.2

20%

22
Q

What is this fraction in decimal form? In percent form?

1/4

A

.25

25%

23
Q

What is this fraction in decimal form? In percent form?

2/5

A

.4

40%

24
Q

What is this fraction in decimal form? In percent form?

1/2

A

.5

50%

25
Q

What is this fraction in decimal form? In percent form?

3/5

A

.6

60%

26
Q

What is this fraction in decimal form? In percent form?

2/3

A

.667

66 and 2/3 %

27
Q

What is this fraction in decimal form? In percent form?

3/4

A

.75

75%

28
Q

What is this fraction in decimal form? In percent form?

4/5

A

.8

80%

29
Q

What is this fraction in decimal form? In percent form?

1/3

A

.333

33 and 1/3%

30
Q

What is this fraction in decimal form? In percent form?

1/8

A

.125

12.5%

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