IB Mathematics Applications & Interpretation 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.