 Witton Middle School

# Mrs Watson

This week, we are revising ratio and proportionThese words can be confusing. On a bottle of orange squash it might say "dilute one part concentrate to four parts water".

Ratio compares the two quantities. Here, that is squash (1 part) and water (4 parts)

squash : water

1 : 4

Proportion tells us how much one part is of the whole. Here, one fifth of the drink is squash. This is often written as a fraction.

You can summarise this as ratio is part to part and proportion is part to whole.

Monday - proportion recipes

1. proportion introduction
2. scaling and rate problems

Do as many of these fluency questions as you can in the time on paper or in a blank word document.

Tuesday – ratio

1. ordering and simplifying fractions
2. ratio introduction
3. modelling ratio

If you need a reminder, you can watch this video on simplifying ratios.

Wednesday – ratios to fractions and percentages

Do p33 and 34 in your CGP book.

Do as many of these fluency questions as you can in the time on paper or in a blank word document.

Thursday – sharing the total