Phoebe's pays 2.8 pence per minute to use her phone. On average Phoebe uses her phone for 77 minutes per day. She pays her phone bill for 29 days.
Work out an estimate for how much Phoebe pays.
Is your answer to part (a) an underestimate or an overestimate? Give a reason for your answer.
247 exam-style questions on Eduqas GCSE Maths Estimating. Each one has a worked solution and a mark scheme showing where the marks go.