Number worksheet — GCSE Foundation

1.Round 4,685 to the nearest 100.

2.Two lighthouses flash at the start of the same minute. The first lighthouse flashes every 8 minutes and the second flashes every 12 minutes. Work out how many minutes it will be until they next flash together.

3.A cinema has 250 seats. 12% of the seats are reserved. Work out how many of the seats are reserved.

4.Work out how many factors 100 has.

5.4ˣ = 64. Work out the value of x.

6.Simplify (y³)⁴, giving your answer as a single power of y.

7.A number is multiplied by 4, then 8 is added, giving the result 40. Work out the number.

8.Which of these numbers is the largest: −9, −7, −4, −2?

9.Work out 2 × (−3 + 7)

10.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.

11.Work out (−2)³ + (−3)² − (−4)

12.The mass of a parcel is 3 kg, correct to the nearest kilogram. Which of these masses is not possible for the parcel?

13.A number is divided by 5, then 6 is subtracted, giving the result −1. Work out the number.

14.Work out an estimate for 79.3 − 24.6, by rounding each number to the nearest whole number.

15.Ava measures a metal rod and records its length as 15 cm, correct to the nearest centimetre. Ben measures the same rod and records its length as 14.8 cm, correct to the nearest 0.1 cm. Decide whether both records can be correct, and give a reason for your answer.