Number worksheet — GCSE Foundation

1.Work out (−36) ÷ (−6) × 2

2.In a fruit crate the ratio of oranges to lemons is 5 : 6. What fraction of the fruit in the crate are lemons?

3.A number is multiplied by 4, then 8 is added, giving the result 40. Work out the number.

4.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.

5.A number, y, is equal to 8.2 when rounded to 1 decimal place. Write down the error interval for y.

6.Work out 8% of £250.

7.Which of these numbers is the largest: −9, −7, −4, −2?

8.Which of these decimals lies between 1/4 and 2/5?

9.On one night in Manchester the temperature at 3 am was 8 °C below zero and at 9 am it was 3 °C below zero. Write down the warmer of the two readings.

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

11.Work out √(4 × 9)

12.Write the mixed number 2 1/4 as an improper fraction.

13.Ava measures a metal rod and records its length as 15 cm, correct to the nearest centimetre. Ben measures the same rod and records its length as 14.8 cm, correct to the nearest 0.1 cm. Decide whether both records can be correct, and give a reason for your answer.

14.A charity bake sale sells 187 cakes at £2.95 each. By rounding each number to 1 significant figure, work out an estimate for the total amount raised.

15.Work out how many factors 100 has.