Multiple & Factors

Multiple & Factors Worksheet-1

1. Which are the first three common multiples of 6 and 4?

A. 15, 20, 25      B. 30, 60, 90    C. 21, 28, 36     D. 12, 24, 36

2. Which option shows the first three common multiples of 3, 6 and 4?

A. 12, 24, 36      B. 12, 18, 24      C. 18, 24, 36     D. 12, 21, 24

Multiple & Factors Worksheet-2

11. Find the least common multiple of 15 and 20

A. 30                   B. 40                C. 60                   D. 80

12. Select the CORRECT statement.

A. A composite number is any number that has less than two factors.

B. A composite number has only two factors, one and itself.

C. A composite number is any number that has more than two factors.

D. A prime number is any number that has more than two factors.

Multiple & Factors Worksheet-3

1. Which option shows common multiples of 15 and 20?

A. 60, 120          B. 75, 90            C. 80, 120          D. 60, 105

2. Which option shows the prime factorization of 12?

A. 2×2×3           B. 2×3×4           C. 3×3×4           D. 2×2×2