Number worksheet — GCSE Foundation

1.Round 592.5 to the nearest 10.

2.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.

3.Nadia has £84. She spends 3/7 of it on a jacket and the rest on a bag. Work out the ratio of the amount spent on the jacket to the amount spent on the bag, in its simplest form.

4.Write the fraction 47/50 as a decimal.

5.Bella's electricity supplier charges 28.5p per unit (kWh). Last month she used 340 units. Work out the total cost, giving your answer in pounds.

6.Work out 1/2 of 1/4 of 80.

7.Write 60 as a product of its prime factors, using index notation.

8.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.

9.Work out an estimate for 113 + 491, by rounding each number to the nearest 100.

10.Priya adds 3.6 and 0.45 on paper and writes down 3.65 as her answer. Work out the correct value of 3.6 + 0.45.

11.The mass of a parcel is 3 kg, correct to the nearest kilogram. Which of these masses is not possible for the parcel?

12.Work out (−3) × 4 + 2 × (−5)

13.Work out an estimate for 8,900 ÷ 29, by rounding each number to 1 significant figure.

14.Work out −6 × (−3).

15.Estimate the value of √45, giving your answer to the nearest whole number.