estimate the sum bye rounding off the numbers to the nearest thousand. then find the actual sum.
1. 5078 + 1734
2. 39167+19009+65432
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Answer:
1. 5000+2000=7000.
Actual Sum= 6812 (✓)
2.40000+20000+60000= 120000
Actual Sum= 39167+19009+65432=123608 (✓)
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