Number worksheet — GCSE Foundation

1.Oliver uses his calculator to work out 25% of 80 and writes down 320. Without using a calculator, work out the correct value of 25% of 80.

2.Is 120 divisible by 5? Give a reason for your answer.

3.A spinner has 4 colours and a coin has 2 sides. Work out how many different outcomes are possible when the spinner is spun once and the coin is tossed once.

4.Work out the value of 2⁻²

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

6.A sponsored walk is 36 km long. Aisha has completed 8/12 of the walk. Work out how far she has walked.

7.A newspaper reports that 48,000 people attended a festival. The figure is correct to the nearest thousand. Which statement about the number of people who attended must be true?

9.Two-digit numbers are formed using the digits 2, 5, 7 and 8, and each digit may be used only once in a number. Work out how many of these two-digit numbers are even.

10.At a book fair the ratio of fiction books to non-fiction books is 4 : 5. Of the non-fiction books, 3/5 are about history. Work out the fraction of all the books at the fair that are history books.

11.A student always writes the digits after the decimal point over a denominator of 100, whatever the number of decimal places. Using this wrong rule, they convert 0.9 to a fraction. Work out the correct fraction that 0.9 is equal to, giving your answer in its simplest form.

12.Work out 3/8 of 96.

13.A roll of ribbon is 8.4 m long. Ribbon is cut into pieces that are each 0.6 m long. Work out how many complete pieces can be cut from the roll.

14.A number line runs from 0 to 1 and is divided into 4 equal parts. Which mark on the line represents 1/4?

15.A market trader buys 8 melons at £1.35 each. He sells all of them for a total of £15.60. Work out his profit.