5th Grade Math · Question of the Day

5th Grade Math Question of the Day

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Tuesday, October 13, 2026

A bus travels $245$ miles in $3.5$ hours. The driver calculated the average speed as $7$ miles per hour. Using estimation, what can be determined about this calculation?

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Question of the Day

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A bus travels $245$ miles in $3.5$ hours. The driver calculated the average speed as $7$ miles per hour. Using estimation, what can be determined about this calculation?

The answer is reasonable because $240 \div 4 = 60$ , which is close to $7$
The answer is unreasonable because $240 \div 4 = 60$ , which is much larger than $7$ (correct answer)
The answer is reasonable because $250 \div 3 = 83$ , which is close to $7$
The answer is unreasonable because $300 \div 5 = 60$ , which is much larger than $7$

Explanation: The driver's calculation of 7 mph is clearly unreasonable. Estimating 245 miles ÷ 3.5 hours as 240 ÷ 4 = 60 mph shows the speed should be around 60 mph, not 7 mph. The driver likely made a calculation error. Choice A incorrectly concludes 60 is close to 7. Choice C provides a poor estimate. Choice D uses very rough rounding but reaches the correct conclusion.