Number worksheet — GCSE Foundation

1.Write these numbers in order, starting with the largest: 7/8, 0.8, 78%, 17/20

2.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.

3.The number 24 can be written as 2³ × 3, and the number 60 can be written as 2² × 3 × 5. Work out the lowest common multiple of 24 and 60.

4.Work out 2 × (−3 + 7)

5.A number is divided by 5, then 6 is subtracted, giving the result −1. Work out the number.

6.Write down the symbol that makes this statement true: −2/3 ___ −5/6

7.A sponsored walk is 36 km long. Aisha has completed 8/12 of the walk. Work out how far she has walked.

8.The attendance at a football match is 23,000, correct to the nearest thousand. Which of these attendances is not possible for the match?

9.Work out 3 + 4 × (−2).

10.Write 0.36 as a fraction in its simplest form.

11.Jack buys 3 books, each costing £4.25, and pays with a £20 note. Work out how much change he receives.

12.Work out 100 − 4 × 5²

13.A cinema has 21 rows of seats with 29 seats in each row. Work out an estimate for the number of people the cinema can hold, by rounding each number to 1 significant figure.

14.A tin of soup has a mass of 450 g. A bag of potatoes has a mass of 2.6 kg. Work out the total mass, in kilograms.

15.Work out the highest common factor of 20 and 32.