Divisibility Rules 2, 3, and 5

Which number is divisible by 5

• 12

• 17

• 15

• 20

Which number is divisible by 3

• 57

• 91

• 38

• 68

Which number is divisible by 3?

• 108

• 212

• 100

• 95

Which number is divisible by 2?

• 56

• 24

• 93

• 105

Which number is divisible by 2?

• 43

• 58

• 202

• 81

The number 315 is divisible by

• 3

• 3 and 2

• 5

• 2 and 5

The number 420 is divisible by?

• 2

• 2 and 5

• 3

• 3 and 5

• 2, 3, and 5

The number 1 is ?

• prime

• composite

• neither

The number 84 is?

• prime

• composite

• neither

How do you know a number is prime?

• It only has one factor pair

• It has more than one factor pair

• Because the digits add up to three