Number worksheet — GCSE Foundation

1.A photograph uses 4 × 10⁶ bytes of storage. A memory card holds 3.2 × 10¹⁰ bytes. Work out how many of these photographs the card can hold. Give your answer in standard form.

2.Work out the highest common factor of 15 and 25.

3.Write the fraction 3/4 as a decimal.

4.In a chess club, 3/8 of the members are girls and the rest are boys. Write down the ratio of girls to boys.

5.Work out the value of √64.

6.A jar of jam costs £2.35. Tom buys 3 jars. He says the total cost is more than £7. Work out the exact total cost, and state whether Tom's claim is correct.

7.Simplify (y³)⁴, giving your answer as a single power of y.

8.Write down the symbol that makes this statement true: 6/11 ___ 4/11

9.Tickets to a theme park cost £38.50 for an adult and £19.75 for a child. A family estimates the total cost for 4 adults and 3 children, by rounding each ticket price to the nearest £5. Work out their estimate for the total cost.

10.Round 3.947 to 2 decimal places.

11.Work out an estimate for 6.8 × 41, by rounding each number to 1 significant figure.

12.Work out √25 + 4² − 12 ÷ 3

13.A tin of paint has a mass of 5.672 kg. Round this mass to 1 decimal place.

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

15.A gardener has 42 tulip bulbs and 56 daffodil bulbs. She plants them in rows, with every row containing the same number of tulip bulbs and the same number of daffodil bulbs, and no bulbs left over. Work out the greatest number of rows she can plant.