A bag of rice has a mass of $$$25 \mathrm{~kg}$$$, correct to the nearest kilogram. Calculate the lower bound of the total mass of 10 of these bags. ......................................... $$$\operatorname{kg}$$$

Mathematics

IGCSE&ALevel

CAIE

Exam No：0580_m21_qp_22 Year：2021 Question No：22(a)

Answer:

245

Knowledge points:

E1.10.1 Give appropriate upper and lower bounds for data given to a specified accuracy. (e.g. measured lengths.)

E1.10.2 Obtain appropriate upper and lower bounds to solutions of simple problems given data to a specified accuracy. (e.g. the calculation of the perimeter or the area of a rectangle.)

Solution:

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A bag of rice has a mass of $$\(25 \mathrm{~kg}\)$$, correct to the nearest kilogram. Calculate the lower bound of the total mass of 10 of these bags. ......................................... $$\(\operatorname{kg}\)$$

Answer:

Knowledge points:

Solution:

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