significant figures

Question

What is the result of (2.5 × 3.42) / 1.2 when expressed with correct significant figures?

RankGuru · Accepted Answer

**Rule for Multiplication/Division**: The result should have the same number of significant figures as the term with the fewest significant figures.
1. **Analyze Input**: 
   - $2.5$ has 2 S.F.
   - $3.42$ has 3 S.F.
   - $1.2$ has 2 S.F.
2. **Calculation**: $(2.5 	imes 3.42) / 1.2 = 7.125$.
3. **Rounding**: Must round to **2 S.F.**
- Result: **7.1**.

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More significant figures Practice Questions

The number of significant figures in 0.00340 is: