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LCM, GCF, Fractions and Decimals
Write 3 and 5/9 as a decimal.
Select the number that is prime.
LCM, GCF, Fractions and Decimals
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7th Grade Chapter 4 Review
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Answers
1
Select the number that is prime.
55
21
67
26
2
Write 3 and 5/9 as a decimal.
3.5 repeating
3.5
3.56
3.5589
3
What is 63/168 in simplest form?
21/56
3/8
6/16
2/3
4
Find the GCF of 90 and 126.
26
4
2
18
5
Write 20/3 as a mixed number.
6 and 1/20
6 and 1/10
6 and 1/3
6 and 2/3
6
Which two fractions are equivalent?
3/4
75/1000
7/10
75/100
7
What does it mean to be
relatively prime?
The number only has factors of 1 and itself.
The LCM of 2 or more numbers is 1.
The number is divisible by 5.
The GCF of 2 or more numbers is 1.
8
Find the GCF of 84 and 96.
4
26
12
2
9
Find the LCD of the following fractions: 3/4, 5/8, and 1/6.
24
2
8
26
10
Write 3.2 as a mixed number.
3/20
3 and 3/20
3 and 1/5
2 and 2/3
11
Find the GCF of 60 and 75.
1
12
15
16
12
Write 10 and 9/14 as an improper fraction.
149/10
140/14
149/14
140/10
13
Write 2/5 as a decimal.
.50
.23
.40
.25
14
Which fraction is the greatest, 7/12 or 2/3?
2/3
They are equivalent
7/12
15
Write 29/4 as a mixed number.
29 and 1/4
4 and 1/29
7 and 1/29
7 and 1/4
16
Order the fractions from least to greatest: 7/12, 4/9, 2/3, 4/7
4/7, 7/12, 2/3, 4/9
4/9, 4/7, 7/12, 2/3
4/9, 7/12, 2/3, 4/7
4/7, 4/9, 2/3, 7/12
17
What is the prime factorization of 55?
52
22 * 3
5*11
55
18
Using prime factorization, find the LCM of 8 and 20.
80
42
40
16
19
Find the LCM of 20, 22, 55.
50
220
200
210
