estimate 121×15 please tell the answer
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Answer:
1815
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121 × 15
∆By general formula
121 is rounded off to 100
15 is rounded off to 20
Estimated product = 100 × 20
= 1 × 100 × 2 × 10
= (1 × 2) × 100 × 10
= 2 × 1000
= 2000
= 2,000
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