Rose Harrison, Clara Huizink, Aidan Sproat Clements and, Marlene Torres Skoumal Solutions for Exercise 9: Practice 2

A crane can lift $1600 \mathrm{kg}$, given to $2$ significant figures. It is being used to load boxes that weigh $48 \mathrm{kg}$ to the nearest $\mathrm{kg}$. Find the maximum number of boxes the crane could possibly lift.

The length $(l \mathrm{cm})$ of a photo frame is $9.5 \mathrm{cm}$ and the width $(w \mathrm{cm})$ is $7.6 \mathrm{cm}$, both measured to $1$ decimal place. Write down an inequality for possible values for the perimeter of the photo frame.

Amanda's garden is rectangular and measures 9.5 m by 21 m both correct to 2 significant figures. Find the upper and lower bound for the area and perimeter of her garden.

Amelia leaves the house at $8.03 \mathrm{am}$ (to the nearest minute) and returns from her run at $8.27 \mathrm{am}$. Calculate the maximum length of time of her run.

A bottle of soda contains $1$ liter to the nearest deciliter. Tarryn wants to fill $90 \mathrm{ml}$ glasses correct to the nearest $10 \mathrm{ml}$. Find the maximum number of full glasses she could possibly fill. Find the minimum number of full glasses she could possibly fill.