To multiply by 5 quickly in your head, do not do long multiplication. Instead, use the fact that 5 = 10 / 2. Divide the number by 2 (halve it), then multiply by 10 (append 0 or shift decimal).
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Correct!
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🏆
Session Completed!
Skill: Multiplying by 5 (Append 0 & Halve)
100%
10 of 10 correct in 18.4s (avg 1.8s/q)
Question Breakdown & Solutions:
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