Number worksheet — GCSE Foundation

1.A restaurant adds a service charge of 15% to a bill of £120. Work out the service charge.

2.Work out how many factors 100 has.

3.Work out 6² − 4².

4.A recipe needs 0.485 kg of flour per cake. A bakery estimates its flour order by rounding this amount to 1 significant figure, then multiplying by the 60 cakes it plans to bake. Work out the bakery's estimate for the total flour needed, in kg.

5.A plane flies 2340 km at an average speed of 780 km/h. It departs at 08:20. Work out the arrival time, using the 24-hour clock.

6.Work out the value of 5³.

7.Simplify 2³ × 2⁴, giving your answer as a single power of 2.

8.Work out 3 + 4 × 2²

9.Work out (−6) + (−4) × 3

10.A country has an area of 25,000,000 hectares. Write this area in standard form.

11.Simplify x⁶ ÷ x²

12.In a youth club the number of girls is 2/3 of the number of boys. What fraction of the members of the club are girls?

13.Work out (4 × 10⁻³) × (2 × 10⁵). Give your answer in standard form.

14.The highest common factor of two numbers is 4 and their lowest common multiple is 60. One of the numbers is 20. Work out the other number.

15.Work out 2 × 3 × 5 + 1 and decide whether the result is a prime number.