**This is a whole-class activity that will help you to teach concepts of ordering decimals and how multiplying and dividing by 10 and 100 affects numbers.**The resources works well on interactive whiteboards but is also effective using a screen and a data projector.

The activity is designed for year 7 groups but might be useful (for example as a starter) for other year groups.

Objectives covered include:

- Understand and use decimal notation and place value; multiply and divide integers and decimals by 10, 100, 1000, and explain the effect.

- Compare and order decimals in different contexts; know that when comparing measurements the units must be the same.

**Download resources**