Number worksheet — GCSE Foundation

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

2.A sponsored walk raised £350 for charity. 20% of the money raised is spent on equipment. Work out how much is spent on equipment.

3.A concrete mix is made from cement and sand in the ratio 3 : 5 by mass. A builder mixes 96 kg of concrete. Work out the mass of cement in the mix.

4.Work out √225 ÷ 3.

5.Work out 2/5 of 45.

6.Freya types 4² + 3² into her calculator and writes down 49. Work out the correct value of 4² + 3².

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.Write these numbers in order, starting with the largest: −0.6, 0.45, −0.15, 0.5, −0.09

9.A photography studio offers 4 backdrops and 3 outfits for a portrait session. The plain grey backdrop, one of the 4 backdrops, cannot be used with the formal suit outfit, one of the 3 outfits. Work out how many different backdrop-and-outfit combinations are possible.

10.Write down the reciprocal of 5/8

11.Which of these numbers lies between −4 and −1 on a number line?

12.Write down the symbol that makes this statement true: −2/3 ___ −5/6

13.Which one of these statements about negative numbers is true?

14.A pack contains 20 stickers. Noah gives 1/5 of the pack to his sister. Work out how many stickers he gives away.

15.Write 0.36 as a fraction in its simplest form.