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Taking into account the significant figures, what is the value of 9.99 m − 0.0099 m?

1. 9.98 m
2. 9.980 m
3. 9.9 m
4. 9.9801 m

Correct answer: 9.98 m

Solution

The subtraction 9.99 m − 0.0099 m gives 9.9801 m. However, the result must be rounded to the least number of decimal places in the given values, which is two decimal places. Thus, the answer is 9.98 m.

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