☆ Find the sum by using suitable rearrangement
a) 123 + 654 +377 +346
b) 542+765+ 368 +125
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Answered by
6
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★ Find the sum by using suitable rearrangement :
a) 123 + 654 + 377 + 346
[7 + 3 = 10 So we will add 123 + 377 first & 4 + 7 = 10, so we will add 654 + 346 at last]
→ (123 + 377) + (654 + 346)
→ 500 + 1000
→ 1500
b) 542 + 765 + 368 + 125
[2 + 8 = 10 So, we will add 542 + 368 first & 5 + 5 = 10, so we will add 765 + 125 at last]
→ (542 + 368) + (765 + 125)
→ 910 + 890
→ 1800
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Answered by
1
Answer:
a) 1500
b) 1800
Step-by-step explanation:
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