Number worksheet — GCSE Foundation

1.A quantity surveyor calculates a length as 24.6851 m. Round this length to 2 decimal places.

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.A courier's van has a weight limit of 850 kg for its parcels. The driver's display shows the total mass of the parcels loaded as 850 kg, correct to the nearest 5 kg. Decide whether the parcels are definitely within the weight limit.

4.Which of these numbers rounds to 0.048 when rounded to 2 significant figures?

5.Work out 8% of £250.

6.Write these fractions in order, starting with the smallest: 2/3, 3/5, 5/6, 1/2

7.A block of butter has a mass of 250 g, correct to the nearest 10 g. Using m for the mass of the block in grams, write down the error interval for m.

8.A cheetah runs at a steady speed of 25 metres per second. Work out this speed in kilometres per hour.

9.A circle has a radius of 3 cm. Which of these is the exact area of the circle?

10.Write these three numbers in order, starting with the smallest: 7/20, 0.3, 32%

11.Two fair six-sided dice are rolled and their scores are added together. By listing the possible totals systematically, work out how many different totals are possible.

12.A shelf is 60 cm long, correct to the nearest 10 cm. Write down the upper bound for the length of the shelf, in centimetres.

13.A tap fills a 20 litre bucket in 2 minutes 30 seconds. Work out the rate of flow, in litres per minute.

14.A washing machine costs £320 before VAT. VAT is charged at 20%. Work out the total price including VAT.

15.A cyclist rides at a steady speed of 8 metres per second. Work out this speed in kilometres per hour.