Activities in this teaching pack include a differentiated set of worksheets to identify and record addition and subtraction calculations that can be used to complete a puzzle involving five digit numbers for core and extension ability levels and four digit numbers for support ability levels.

The interactive presentation gets the children to explore how to use inverse operations to add and subtract pairs of different five digit numbers to complete a puzzle,

This lesson is part of a maths scheme of work to get the children to use standard written methods of addition and subtraction to check calculated sums using inverse operations and solve problems with multi-step solutions. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.