alleryRounding both numbers to the nearest ten, 24 × 36 becomes:
A20 × 30
B30 × 40
C20 × 40
D20 × 36
Answer & Solution
Correct answer: C. 20 × 40
1. Round 24 to 20 and 36 to 40.
2. The estimate is 20 × 40 = 800.
3. The exact answer is 864.
_Source: Wikipedia, Multiplication (CC BY-SA 4.0, rev 1378304279), Multiplication algorithm_
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