Number worksheet — GCSE Foundation

1.Priya has 24 red beads and 36 blue beads. She makes identical bracelets, using every bead and with none left over. Work out the greatest number of bracelets she can make.

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

3.Work out 3 + 4 × 2²

4.Work out (−6) + (−4) × 3

5.Grace drinks 1/3 of a bottle of water in the morning and another 1/3 of the same bottle in the afternoon. Work out what fraction of the bottle she has drunk altogether.

6.3.4 × 10⁵ is written as an ordinary number. Work out this number.

7.Work out (−2)² − 3

8.A space probe is 7.5 × 10⁸ km from Earth. Write this distance as an ordinary number.

9.A café offers sandwiches with one filling from 5 choices and one type of bread from 4 choices. Cheese and mustard, which is one of the 5 fillings, is not available on gluten-free bread, which is one of the 4 breads. Work out how many different sandwiches are possible.

10.Work out the lowest common multiple of 9 and 15.

11.Work out (−3) × 4 + 2 × (−5)

12.A number, n, is a multiple of both 6 and 9. Work out the smallest possible value of n that is greater than 20.

13.A quarter-circle has a radius of 6 cm. Work out the exact perimeter of the quarter-circle, giving your answer in terms of π.

14.Work out 2 3/4 − 1 5/6. Give your answer as a fraction in its simplest form.

15.Work out 3/4 − 5/12 exactly, giving your answer in its simplest form.