Multiples, Factors and Primes Starter

Which of the following is not a prime number?

• 13

• 2

• 1

• 7

How do we know 5 is a prime number?

• It only has two factors

• It is a multiple of 5

• It is the sum of 2 + 3

• It is the difference between 8 and 3

What is the 8th multiple of 6?

• 42

• 49

• 40

• 48

What are the first five multiples of 9?

• 1, 9, 18, 27, 36

• 9, 18, 28, 36, 45

• 9, 18, 27, 36, 48

• 9, 18, 27, 36, 45

What is the lowest common multiple (LCM) of 18 and 24?

• 2

• 4

• 6

• 8

What is the highest common factor of 12 and 72?

• 6

• 12

• 4

• 3

What is the highest common factor of 30 and 42

• 5

• 7

• 8

• 6

What is 34 x 20

• 680

• 860

• 68

• 780

What is 6.892 rounded to 2 decimal places?

• 6.89

• 6.88

• 6.90

• 6.9

What is 12.992 rounded to 1 decimal place?

• 13

• 12.90

• 13.0

• 12.9