Factor pairs worksheets Grades 4–5

How to do it

Start at 1 and work up. Stop when the pairs start to repeat.

Example problems

1. $\text{Factor pairs of }100:$$1\times 100, 2\times 50, 4\times 25, 5\times 20, 10\times 10$Show answer
2. $\text{Factor pairs of }16:$$1\times 16, 2\times 8, 4\times 4$Show answer
3. $\text{Factor pairs of }42:$$1\times 42, 2\times 21, 3\times 14, 6\times 7$Show answer
4. $\text{Factor pairs of }75:$$1\times 75, 3\times 25, 5\times 15$Show answer

Factors, multiples and prime numbers

1. Divisibility rules
2. Factor pairs
3. Listing factors
4. Prime and composite numbers
5. Prime factorization
6. Greatest common factor (GCF)
7. Least common multiple (LCM)
8. GCF and LCM mixed practice