Factors and Multiples

Select the TWO numbers that are multiples of 7.

• 22

• 42

• 34

• 14

• 27

Select the THREE numbers that are factors of 30.

• 1

• 3

• 12

• 15

• 50

Select the THREE numbers that are PRIME NUMBERS.

• 16

• 11

• 15

• 23

• 2

Select the TWO numbers that are ODD numbers.

• 433

• 190

• 4008

• 111

• 124

What are the four factors of 21?

(a)  

I am a mulitple of 9 and I am also an odd number that is less than 50 but more than 30. Who am I?

(a)  

Find the PRIME FACTORS of the number 40 using a factor tree.

What are the SIX factors of 20?

What are the EIGHT factors of 30?

Based on the previous questions, what is the highest common factor (H.C.F) of 20 and 30?

• 1

• 5

• 10

• 20