Activities in this teaching pack include a template to record how to work with concrete equipment and diagrams to model subtraction calculations and a differentiated set of worksheets to select different three digit numbers to use when completing sums to subtract ones from the selected numbers.

The interactive presentation gets the children to explore how to use concrete equipment and diagrams when subtracting ones from different three digit numbers.

This lesson is part of a maths scheme of work to get the children to develop and refine mental and informal written calculation skills when subtracting different pairs of three digit numbers and ones, tens and hundreds. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.