Check My Progress (Lessons 1 through 2)

Find the factor pairs of each number. 1. 45

• 1, 45; 3, 15; 5, 9

• 1, 45; 2, 23; 3, 14

• 1, 45; 5, 8; 3, 12

• 1, 45; 2, 22; 5, 10

Find the factor pairs of each number. 2. 30

• 1, 30; 2, 15; 3, 10; 5, 6

• 1, 15; 2, 30; 3, 5; 6, 10

• 1, 10; 2, 5; 3, 6; 15, 30

• 1, 6; 2, 3; 5, 10; 15, 30

Find the factor pairs of each number. 3. 33

• 1, 33; 3, 11

• 1, 33; 2, 16

• 1, 33; 5, 7

• 1, 33; 4, 8

Find the factor pairs of each number. 4. 64

• 1, 64; 2, 32; 4, 16; 8, 8

• 1, 32; 2, 16; 4, 8; 8, 4

• 1, 64; 2, 16; 4, 8; 8, 2

• 1, 32; 2, 8; 4, 16; 8, 4

Is 16 a multiple of 4?

• yes

• no

Is 24 a multiple of 8?

• yes

• no

Is 54 a multiple of 3?

• yes

• no

Tell whether each number is prime, composite, or neither. 8. 1

• neither

• prime

• composite

• even

Tell whether each number is prime, composite, or neither. 9. 18

• composite

• prime

• neither

• even

Tell whether each number is prime, composite, or neither. 10. 7

• prime

• composite

• neither

• even