Ben and Bella use a calculator to work out 198.73.12+10.8\displaystyle \frac{198.7}{3.1^2 + 10.8}3.12+10.8198.7
Ben's answer is 1
Bella's answer is 10
One of those answers is correct.
Use approximations to find out which answer is correct.
Practise AQA GCSE Maths Estimating with exam-style questions for Foundation and Higher tier. 64 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.