Multiples, factors, powers and roots - AQA

1

Which numbers are all factors of 40?

2

Which numbers are the first five multiples of 6?

3

Which of these numbers is NOT a prime number?

4

How can 35 also be written?

5

What is \sqrt{64}?

6

Write 12 as the product of its prime factors.

7

Write 90 as the product of its prime factors.

8

Calculate the HCF of 12 and 90.

9

Calculate the LCM of 12 and 90.

10

A boy must take a red tablet every 20 minutes and a blue tablet every 35 minutes. If he takes both tablets at 12pm, what time will he next take both tablets together?