Edexcel IGCSE Math A 1.8.C upper and lower bounds

Practise bounds questions by writing lower or upper limits for rounded weights, heights, lengths and decimal measurements.

Exam points

Write the lower or upper bound for a measurement rounded to the nearest 10 cm or 10 g.
Use the degree of accuracy to decide the half-interval for lengths, heights or weights.

[Maximum number: 2]

The weight of a cake is 2.75 kg , correct to 2 decimal places.

(a)

Write down the lower bound of the weight of the cake.

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(b)

Write down the upper bound of the weight of the cake.

Penny has worked out $\frac{81.3 \times 59.2}{1.9^{2}}$ on her calculator.
Her answer is 13332.29917
Penny's answer is not sensible.

[ 1 ]

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1.8.C Upper and lower bounds question 1

Question (a)

Question (b)