Question Type 2: Rounding numbers to a specific value in significant figures Exercises

Round 0.00456789 to 2 significant figures.

Round 12345.67 to 4 significant figures.

Round 9.87654 to 3 significant figures.

Round 593.999 to 4 significant figures.

Express $0.000123456$ to 5 significant figures.

A chemical concentration is measured as $0.034567\,\text{M}$. Express this value to 3 significant figures.

A measurement of a length is $0.00098765\,\text{m}$. Round this to 2 significant figures.

Round 0.99949 to 3 significant figures.

Calculate $(12.345 + 0.0067)$ and round the result to 3 significant figures.

Calculate $0.0678 \div 0.0034$ and round your answer to 2 significant figures.

Multiply $456.2 \times 0.00321$ and round your answer to 4 significant figures.

Compute $5.678 \times 2.34$ and round your answer to 3 significant figures.

Calculate $123 \times 456.7$ and round the final result to 5 significant figures.

The density of a sample is found by dividing its mass $78.6\,\text{g}$ by its volume $0.0452\,\text{cm}^3$. Calculate the density and round to 4 significant figures.