Question Type 1: Rounding numbers to a specific value in decimals Exercises

Add $7.899$ and $3.4565$, then round your answer to three decimal places.

Round the number $5.678$ to two decimal places.

Calculate $0.1234 \times 0.5678$ and round the answer to four decimal places.

Find the area of a rectangle with sides $5.678\text{ m}$ and $2.345\text{ m}$, then round your answer to three decimal places.

A book has mass $12.345\,\text{kg}$ and a volume of $0.004567\,\text{m}^3$. Calculate its density $\rho = \frac{m}{V}$ and round your answer to four decimal places.

A chemical solution has concentration $0.076543\,\text{g/mL}$. Find the mass of solute in $125.8\,\text{mL}$ and round your answer to three decimal places.

Round the number $0.03456$ to three decimal places.

Divide $7.2$ by $3$ and round the result to three decimal places.

Calculate $3.45 \times 11.3$ and round the answer to two decimal places.

Round the number $12.34567$ to four decimal places.

A region has a population of $1{,}234{,}567$ and an area of $234.56\text{ km}^2$. Calculate the population density, rounding your answer to one decimal place.