Ordering and Comparing Various forms of Numbers, Unit Fractions, Number Representation, Decimal Values of Common Fractions Flashcards

1
Q

Unit Fraction

A

a fraction with a numerator of 1

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2
Q

1/2 as a decimal

A

.5

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3
Q

1/4 as a decimal

A

.25

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4
Q

2/4 as a decimal

A

.5

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5
Q

3/4 as a decimal

A

.75

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6
Q

1/5 as a decimal

A

.2

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7
Q

2/5 as a decimal

A

.4

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8
Q

3/5 as a decimal

A

.6

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9
Q

4/5 as a decimal

A

.8

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10
Q

1/3 as a decimal

A

.333…

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11
Q

1/8 as a decimal

A

0.125

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12
Q

1/10 as a decimal

A

.1

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13
Q

2/3 as a decimal

A

.666…

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14
Q

5/8 as a decimal

A

.624

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15
Q

4/8 as a decimal

A

.5

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16
Q

3/8 as a decimal

A

.375

17
Q

2/8 as a decimal

A

.25

18
Q

Which of the following is a decomposition of 3/4?
A. 1/4+1/4+1/4=3/4
B. 3/4=0.75=75%
C. 1/4+3/4=4/4=1
D. 1/2<3/4

A

A. because decomposing a fraction means to break a fraction up into the sum of the smaller parts with the same denominator.

19
Q

What tool is effective as a visual when students are first learning percents and decimals as values of of 100?

A

Base-10 Blocks

20
Q

How do you write a number out of 100 as a fraction?

A

place the number over 100 and reduce

21
Q

How do you convert a fraction to a decimal?

A

always divide the numerator (top number) by the denominator (bottom number)

22
Q

How do you convert a decimal to a percent?

A

move the decimal point two place values to the right

23
Q

What is moving the decimal point to place values to the right the same as?

A

multiplying by 100

24
Q

How do you find the percent of a number?

A

change the percent to a decimal and multiply the decimal by the number

25
Q

Choose a number from the list that is greater than 70% but less than 80%
0.85 65/100 1 0.75 2^2

A

Solution: 0.75
The correct choice should be between 0.7 and 0.8
0.85 is not between 0.7 and 0.8
65/100 = 0.65 is not between 0.7 and 0.8
1 is not between 0.7 and 0.8
0.75 is between 0.7 and 0.8
2^2 = 4 is not between 0.7 and 0.8