Ratios - Finding a missing value

Lesson Starting 

Everyone who is not in the seating plan I have from Mrs Jackson will be on an immediate stage 3. (at 12:15)

Exercise books out, and ready to listen before 12:15 please

Your maths lessons can be reviewed at http://amsmath9s3.blogspot.co.uk/

Home learning

Finish the sheet for next lesson

Aim

To be able to find a missing value in a ratio.

Introduction

We are using the skills we learned last week to find missing values in a ratio.

Each number in a ratio can be divided or multiplied by a number and the result will be equivalent.

We can chain divisions, and / or multiplications, and the resulting ratio is still equivalent, provided we do the same thing to each number in the ratio.

Task

All questions on worksheet.

End of lesson

All worksheets in books,

All books away please.