Rounding/Examples/419.8 to Three Significant Figures

Example of Rounding

$419 \cdotp 8$ rounded to $3$ significant figures is $420$.

This is because $419 \cdotp 8$ is closer to $420$ than it is to $419$.

Sources

• 1938: A. Geary, H.V. Lowry and H.A. Hayden: Mathematics for Technical Students, Part One ... (previous) ... (next): Arithmetic: Chapter $\text I$: Decimals: Decimal Places and Significant Figures