Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Ratio and Proportion, Exercise 1: Getting started

For the following shape, write down the ratio of blue squares to red squares.

For the following shape, write down the ratio of blue squares to red squares.

Which of these ratios are equivalent to the ratio $1:2?$

$2:4, 3:5, 7:14, 6:3, 10:20$ and $8:9$

Put these cards into pairs of equivalent ratios.

$1:3, 4:1, 2:5, 2:6, 3:2, 6:15, 6:4$ and $12:3$

One pen costs $80$ cents. How much does it cost to buy two pens?

One pen costs 80 cents. How much does it cost to buy five pens?

One pen costs 80 cents. How much does it cost to buy twenty pens?

A $5 \mathrm{litre}$ tin of paint covers $20 {\mathrm{m}}^2$ of wall. How many ${\mathrm{m}}^2$ of wall will $15 \mathrm{litres}$ of the same paint cover?