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

Question

Question

This question was previously asked in

NEET 2020 Official Paper (Held On: 13 September, 2020)

Answer 1

Concept Used:

In subtraction, the result should have the same number of decimal places as the term with the fewest decimal places.
Given values:
- 9.99 m → 3 significant figures (2 decimal places).
- 0.0099 m → 2 significant figures (4 decimal places).

Calculation:

Performing the subtraction,

⇒ A - B = 9.99 - 0.0099

⇒ 9.9801 m

Since the result should have 2 decimal places (same as 9.99 m), we round:

⇒ 9.98 m

∴ The correct answer is 9.98 m.

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