Q1 Review

Which are the factors of 14?

• (1,14)

• (1, 2, 7, 14)

• (2, 7)

If a number has only 2 factors, what do we call it?

• prime

• composite

If a number has 3 or more factors, what do we call it?

• prime

• composite

Which number below is NOT prime?

• 7
• 9
• 2
• 3

Which lists all the factors of 15?

• 1, 7, 8, 15
• 1, 15
• 1, 3, 5, 15
• 3, 5, 15

All even numbers have which number as a factor?

• 3
• 4
• 2
• 5

What choice is a multiple of 9?

• 100
• 73
• 81
• 62

Which of these numbers is a multiple of 18?

• 2
• 6

• 35

• 54

Which number is not a multiple of 11?

• 31

• 11

• 55

• 77

List the first 5 multiples of 8

• 1, 2, 4, 8

• 8, 16, 24, 32, 40