Advanced MathEasy–MediumAmount after three doublings
Advanced Math practice question
A sum of $5 is doubled three times. What is the result, in dollars?
Answer: 40
5 × 2 × 2 × 2 = 40.
Common wrong answers
- If you answered 15
- 15 triples 5 instead of doubling three times.
- If you answered 30
- 30 adds 5 three times and doubles once, or multiplies 5 by 6.
- If you answered 80
- 80 doubles four times.
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