alex 7 math unit 2 test Flashcards

1
Q

fractions

A

equal parts of a whole and of a set

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2
Q

numerator

A

how many parts are counted

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3
Q

denominator

A

how many equal parts in a whole

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4
Q

mixed number

A

a mixture of a whole number and a fraction
example
1 3/8

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5
Q

improper fraction

A

the numerator in a fraction is larger then the denominator
example
9/5

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6
Q

equivalent fractions

A

represent the same amount

example 1/4=2/8

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7
Q

unit fractions

A

has 1 in the numerator
example
1/7

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8
Q

repeating decimal

A

repeating decimal
example
4.888888888888888888888888888888888888888888888888888888888888888888888

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9
Q

terminating decimal

A

decimal that does not go on forever
example
4.94852

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10
Q

of

A

x

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11
Q

equivalent

A

equal value
example
1=1

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12
Q

LCD

A

lowest common denominator(multiple)

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13
Q

GCF

A

greatest common factor

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14
Q

lowest terms

A

the lowest possible

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15
Q

unit

A

the ones place

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16
Q

difference between a mixed number and improper fraction

A

showed in different ways

17
Q

how to know if 2 fractions r equivalent

A

divide or x

18
Q

how to add fractions

A
change in to improper fraction
reduce
find lcd 
multiply numbers to get lcd as denominator
add
reduce
turn into mixed number
example
1   4/5+8/10
9/5+8/10
9/5+4/5
13/5
2    3/5
19
Q

how to subtract fractions

A
change into improper fraction
reduce
find lcd 
multiply numbers to get lcd as denominator
subtract
reduce
turn into mixed number
example
9/2-8/5
LCD=10
9/2x5/5-8/5x2/2
45/10-16/10
29/10
2    9/10
20
Q

how to change decimal to fraction

A

example
0.462= fraction
462/1000
231/500

21
Q

how to change fraction to decimal

A
example
4/20=decimal
2/10
1/5
2/10
0.2
22
Q

mixed number = decimal

A

example
2 17/100
217/100
2.17

23
Q

decimal=mixed number

A

example
6.39
639/100
6.39

24
Q

change decimal to fraction then compare

A
example
0.8 compared to 9/30
0.8 compared to 3/10
8/10 compared to 3/10
8/10 is bigger then 3/10
25
Q

change fraction to decimal the compare

A
example
6/30 compared to 6.5
2/10 compared to 6.5
1/5 compared to 6.5
2/10 compared to 6.5
0.2 compared to 6.5
0.2 is smaller then 6.5
26
Q

multiply fractions

A
straight across
example
4/6x3/9
2/3x1/3
2/9
27
Q

divide fractions

A
flip the second number
then multiply
example
2/8 divided by 9/3
1/4 divided by 9/3
1/4 divided by 3/1
1/4 x 1/3
1/12