Question

Berenika wants to buy 35 T-shirts.
Each T-shirt costs £5.80
Berenika does the calculation 40 × 6 = 240 to estimate the cost of 35 T-shirts.
(a) Explain how Berenika’s calculation shows the actual cost will be less than £240

Answer 1

Answer:

coz. she have took 5 more t shirt in calculation,also take 0.20 extra pricing on each

hence, actual cost should be less than that

Answer 2

Answer:

Her calculation is based on rounding each 35 and 5.8 to full number: 35->40, 5.8->6. As a result both number increased and resulted in increased sum, thus overestimated.