Download Factors and Multiples Practice

Chapters 1 - 3 Cumulative Review
1)
List the first 10 prime numbers:
2)
Which number has the most factors 72 or 81? Show your proof.
3)
Calculate the following: Be sure to show all of your steps,
a)
36+10x3+ (10-4) =
b)
12x4 +(50-13x2) =
4)
Use a factor tree to identify all of the prime factors of 90.
5)
Use factor rainbows to determine all of the factors of 144.
6)
Write the first 5 multiples of the following:
7)
a)
6
b)
9
Calculate the following and show all of your work:
a)
10000-8125 =
b) 697 + 49 + 1254 =
c) 25 x 99
Name
Date
(Answer ID U 0116392)
Number Theory
List all of the factors of each number.
1. 23
2.
50
3.
40
14. 42
5. 32
6.
10
7.
33
8.
9. 25
10.
35
36
11.
16
12.
27
16.
49
13.
44
14. 37
15.
21
17.
62
18. 78
19.
94
120. 77
4
Number Theory
Find the greatest common factor of each set of numbers.
21 and 15
2. 30 and 46
3. 6 and 75
4. 36 and 24
5. 60 and 68
6. 96 and 72
7. 52 and 88
8. 80 and 4
9. 55 and 15
10. 36 and 20
11. 81 and 87
12. 36 and 81
13. 30, 54, and 44
14. 25 and 44
15. 77, 21, and 28
16. 53 and 95
17. 54 and 17
19. 11 and 26
20. 72 and 24
1.
.18.
39 and 84
Factors Review
1) List the first eight prime numbers.
2) List the first eight composite numbers.
Tell whether the number
composite.
4)42
5)41 is prime or6)
112
7) 101
8)57
9)79
Write the prime factorization of the number.
10)32
11)42
12)54
13)48
15)58
16)46
9) 100
14)94
17)36
20) 99
18)81
21)75
Find the GCF of the numbers.
22) 16, 28
23) 49, 56
24) 36, 72.
25) 54,81
26)49,63
27) 12,72
28) 40, 80
29) 15, 60
30) 30, 54 _
Tutor-USA.com Worksheet
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Name
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IsdHelper.
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Date
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(Answer ID U 0138745)
Number Theory
Find the least common multiple.
1. 3 and 12
12. 4 and 15
4.
4 and 16
5.
2 and 12
7.
4 and 9
8.
6 and 30
10.
8 and 16
11.
2, 6, and 12
13.
9 and 12
14.
8, 12, and 15
16.
5 and 15
17.
5, 20, and 35
19.
5, 8, and 16
20.
5, 14, and 15
:3.
6.
3 and6
3 and 10
\9. 4 and 8
12. 2, 4, and 6
|15.
8 and 10
18. 10 and 28
121. 9 and 15
1
12
2 60
3 6
4 16
5 12
6 30
2 36
1 30
9
8
16
12
12 12
13 36
i _ 120
15 40
JO
11
16 15
12 140
i i 140
1280
20210
21 45