Number worksheet — GCSE Foundation

1.Write 0.0038 in standard form.

2.A cube-shaped storage box has edges of length 7 cm. A shelf can hold a total volume of 2,000 cm³. Work out the greatest number of these boxes that will fit in that volume.

3.A plane flies 2340 km at an average speed of 780 km/h. It departs at 08:20. Work out the arrival time, using the 24-hour clock.

4.Work out 8% of £250.

5.A recipe states that a cake needs 200 g of flour, correct to the nearest 25 g. Work out the smallest possible mass of flour, in grams, that could actually be used.

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

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

8.By listing systematically, work out how many two-digit multiples of 5 can be made using the digits 0, 3 and 5, if each digit can be used at most once and the number cannot start with 0.

9.Write 45,000 in standard form.

10.A number, n, is equal to 3.7 when rounded to 1 decimal place. Write down the error interval for n.

11.After a price increase of 10%, a laptop costs £330. Work out the original price.

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 piece of ribbon is 2.4 metres long. Kim cuts 40 cm from it. Work out the length of ribbon left, in millimetres.

14.A café sells ice cream in three flavours: vanilla, mango and pistachio. Isla buys a cone with two scoops, using two different flavours, one for the bottom scoop and one for the top scoop. Work out how many different cones she could buy.

15.A lorry travels 105 miles in 1 hour 45 minutes. Work out its average speed in miles per hour.