Numbers: Factors, Multiples, Prime and Composite

Level of Achievement 1- 2

2085 is divisible by:

Select all that apply.

• 2

• 3

• 4

• 5

• 10

Level of Achievement 1- 2

20500 is divisible by:

Select all that apply.

• 2

• 3

• 4

• 5

• 10

Level of Achievement 1-2

Which of the following are factor pairs for 18?

Select all the answers that apply:

• 9 and 9

• 1 and 18

• 3 and 6

• 2 and 9

Level of Achievement 1-2

List all the factors of 32.

• 1,2,4,8,16,32

• 1,2,16,32

• 1,32

• 2,4,8

Level of Achievement 1-2

Identify the factor of 27 from the following numbers

• 3

• 8

• 6

• 2

Level of Achievement 1-2

State which of the following is a multiple of 15

• 35

• 90

• 50

• 65

Level of Achievement 1-2

Calculate the least common multiple (LCM) between 6 and 2

(a)  

Level of Achievement 3-4

Write down all prime numbers less than 20.

• 1,2,3,5,7,11,13,17,19

• 2,3,5,7,11,13,17,19

• 2,3,5,9,11,13,17,19

• 2,3,5,7,9,11,13,15,17,19

Level of Achievement 3-4

We know 7 x 4 = 28.

Identify which of the following statements are true

• 28 is a multiple of 7.

• 7 is a factor of 28.

• 28 is a factor of 4.

Level of Achievement 3-4

Identify the set of numbers that are shaded on the hundred chart

• Only the factors of 33

• Only the multiples of 33

• Only the factors of 99

• Only the multiples of 99