Finding Factor Pairs

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Date:

📚 Part 1: Multiple Choice

1. Which of these is a factor pair of 12?

2 and 6

3 and 5

4 and 4

1 and 10

2. Which pair multiplies to 30?

5 and 6

3 and 12

7 and 5

10 and 3

3. Check all that apply: Which are factor pairs of 24?

1 and 24

2 and 12

3 and 8

4 and 6

5 and 5

4. Which statement is true?

If a × b = n then b × a = n (commutative property)

A factor pair always includes a 1

All factor pairs are two different numbers

Prime numbers have more than two factor pairs

5. List all factor pairs of 36. Show any working below, then write the pairs.

6. Find the missing factor: ____ × 7 = 49

7. Sam arranges 20 counters into rectangle arrays. List the factor pairs of 20 that show possible row × column arrangements.

8. True or False? Explain your answer in one or two sentences: "If a number has only the factor pair 1 × n, it is prime."

9. Challenge: Find one number between 30 and 50 that has exactly four factor pairs. Write the number and its factor pairs.