Topic: Multiplication and Division B2.9 – Identifying Equivalent Ratios

Ontario Curriculum Expectation:

5.B2.9 represent and create equivalent ratios and rates, using a variety of tools and models, in various contexts

Ratios compare two or more different quantities to each other.

The ratio of cupcakes to cookies is 2:4. For every 4 cookies, there are 2 cupcakes.
This can be simplified to 1:2, or scaled up to 20:40.