Number worksheet — GCSE Foundation

1.The diameter of an artificial silk fibre is 4 × 10⁻⁶ metres. One nanometre is 10⁻⁹ metres. Work out the diameter of the fibre in nanometres.

2.Work out the lowest common multiple of 9 and 15.

3.For any two whole numbers, the product of the numbers is equal to the product of their highest common factor and their lowest common multiple. The highest common factor of 6 and 8 is 2, and 6 × 8 = 48. Work out the lowest common multiple of 6 and 8.

4.Which of these units would be most appropriate to use when stating the mass of a small car?

5.A recipe uses 160 g of flour. Sam wants to increase the amount by 1/4. Work out the new amount of flour.

6.Write down a prime number between 30 and 40.

7.Write 0.325 as a fraction in its simplest form.

8.Work out (3 × 10²) × (2 × 10⁵). Give your answer in standard form.

9.A florist has 60 red roses and 84 white roses. She wants to make identical bunches using all the flowers, with the greatest possible number of bunches. Work out how many red roses will be in each bunch.

10.Round 0.006482 to 2 significant figures.

11.Work out the value of 6² − 4³.

12.A café offers 3 types of soup and 4 types of bread roll. Work out how many different combinations of one soup and one bread roll are possible.

13.The thickness of a sheet of card is 0.02384 cm. Write this thickness correct to 2 significant figures.

15.A paint mix is made from white paint and blue paint in the ratio 5 : 3. Priya uses 1.2 litres of blue paint and the matching amount of white paint. Work out the total volume of the mix.