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

1. 9.9801 m

2. 9.98 m

3. 9.980 m

4. 9.9 m

Doubtly Asked 30 Oct 2026 NEET UG 2020 Practice test neet Save WhatsApp Report

1 answer

Best answer

Answer: 2. 9.98 m

For subtraction, the result keeps as many decimal places as the number with the fewest decimal places.

9.99 has 2 decimals and 0.0099 has 4. Exact difference: 9.9801. Round to 2 decimals:

$$9.99-0.0099\approx9.98\ \text{m}$$

Answer: option 2.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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