By re-arranging the given numbers, evaluate:
162 + 253 + 338 + 47 [2 Marks]

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Solution

162 + 253 + 338 + 47 = (162 + 338) + (253 + 47)
[By associative law] [1 Mark]
= 500 + 300
= 800 [1 Mark]

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Similar questions

Evaluate each of the following:
(i) $\frac{2}{3} - \frac{3}{5}$

(ii) $\frac{- 4}{7} - \frac{2}{(- 3)}$

(iii) $\frac{4}{7} - \frac{(- 5)}{(- 7)}$

(iv) $\frac{- 2}{1} - \frac{5}{9}$

\sqrt{98} \times \sqrt{162}

\sqrt{98} \times \sqrt{162}

162 + 253 + 338 + 47

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