Science, Maths & Technology
Rounding and estimation
...family of five. The presents cost £2.15, £3.02, £2.99 and two at £2.50. Estimate your share of this cost. However, when you used your calculator to calculate your share: using the calculator you got the answer £9.41. Why doesn’t this answer make sense? Investigate what you might have done wrong. Answer The cost of the presents is roughly £2 + £3 + £3 + £5 (= 2...