Question
Determine the sums given below using suitable rearrangement.
1 + 2 + 3 + 4 + 96 + 97 + 98 + 99
1 + 2 + 3 + 4 + 96 + 97 + 98 + 99
✓
Answer
1 + 2 + 3 + 4 + 96 + 97 + 98 + 99
(1 + 2 + 3 + 4) + (96 + 97 + 98 + 99) (Using associative property of addition)
= (10) + (390)
= 400
(1 + 2 + 3 + 4) + (96 + 97 + 98 + 99) (Using associative property of addition)
= (10) + (390)
= 400
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