Question
Determine the sums given below using suitable rearrangement. $15409 + 278 + 691 + 422$
✓
Answer
$15409 + 278 + 691 + 422 (15409 + 278) + (691 + 422)$ (Using associative property of addition)
$= 15687 + 1113 = 16800$
$= 15687 + 1113 = 16800$
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