Activities in this teaching pack include a differentiated set of worksheets to record how to use standard written methods to check addition calculations of three and four digit numbers for support ability levels, four and five digit numbers for core ability levels and decimals for extension ability levels.

The interactive presentation gets the children to explore how to use written methods to check addition calculations of three, four and five digit numbers including decimals.

This lesson is part of a maths scheme of work to get the children to practise using standard methods of calculation for columnar addition with exchange between place value to solve problems when finding the sums of pairs of different numbers. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.