Practice: Factors & Multiples

Grade 4 Mathematics

Name:
Date:
Directions: Show your work. Remember: Factors divide evenly into a number. Multiples are products of skip counting.

Part A: Find All Factor Pairs

1.

Factor pairs of 20:

2.

Factor pairs of 36:

3.

Factor pairs of 48:

4.

Factor pairs of 56:

5.

Factor pairs of 72:

6.

Factor pairs of 100:

Part B: Prime or Composite? (Circle one for each)

7.
17
Prime / Composite
8.
27
Prime / Composite
9.
31
Prime / Composite
10.
49
Prime / Composite
11.
53
Prime / Composite
12.
63
Prime / Composite
13.
71
Prime / Composite
14.
91
Prime / Composite

Part C: List the First 6 Multiples

15. Multiples of 8:

16. Multiples of 9:

17. Multiples of 11:

18. Multiples of 12:

19. Is 84 a multiple of 7?

Yes / No   Because:

20. Is 52 a multiple of 6?

Yes / No   Because:

Part D: Common Factors and Greatest Common Factor (GCF)

21. Factors of 12: _______________

Factors of 18: _______________

Common factors: _______________

GCF:

22. Factors of 20: _______________

Factors of 30: _______________

Common factors: _______________

GCF:

23. Factors of 24: _______________

Factors of 36: _______________

Common factors: _______________

GCF:

24. Find the GCF of 16 and 28:

GCF:

25. Find the GCF of 45 and 60:

GCF:

Part E: Common Multiples and Least Common Multiple (LCM)

26. First 6 multiples of 4: _______________

First 6 multiples of 6: _______________

Common multiples: _______________

LCM:

27. First 6 multiples of 3: _______________

First 6 multiples of 5: _______________

Common multiples: _______________

LCM:

28. Find the LCM of 6 and 8:

LCM:

29. Find the LCM of 9 and 12:

LCM:

Part F: Word Problem

30. Maria has 24 red flowers and 36 yellow flowers. She wants to make bouquets with the same number of red flowers and the same number of yellow flowers in each bouquet, with no flowers left over. What is the greatest number of bouquets she can make?

Answer: bouquets

FAST Success Kit | Grade 4 | FL B.E.S.T. Standards: MA.4.AR.1.1-1.3