Download 8-1 Practice B - ASB Bangna

Name
LESSON
8-1
Date
Class
Practice B
Factors and Greatest Common Factors
Write the prime factorization of each number.
1. 18
2. 120
2 32
3. 56
23 3 5
4. 390
23 7
5. 144
2 3 5 13
6. 153
24 32
3 2 17
Find the GCF of each pair of numbers.
7. 16 and 20
4
8. 9 and 36
9
9. 15 and 28
1
10. 35 and 42
7
11. 33 and 66
33
13. 78 and 30
6
12. 100 and 120
20
14. 84 and 42
42
16. 12p 2 and 30q 5
6
9y
Find the GCF of each pair of monomials.
5x 2
4
2
15. 15x and 35x
17. 6t 3 and 9t
3t
18. 27y 3z and 45x 2y
19. 12ab and 12
12
20. 8d and 14d
m 6n
22. 10gh 2 and 5h
21. m 8n 4 and 3m 6n
3
2d
4
3
5h
23. Kirstin is decorating her bedroom wall with photographs.
She has 36 photographs of family and 28 photographs of friends.
She wants to arrange the photographs in rows so that each row
has the same number of photographs, and photographs of family
and photographs of friends do not appear in the same row.
a. How many rows will there be if Kirstin puts the greatest possible
number of photographs in each row?
16
b. How many photographs will be in each row?
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
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