Activities in this teaching pack include a set of differentiated worksheets to check and correct addition sums of pairs of two digit numbers for support ability levels and three digit numbers for core and extension ability levels using an expanded addition method to complete each calculation.

The interactive presentation gets the children to explore how to use an expanded method of addition to add pairs of three digit numbers with exchange between place value.

This lesson is part of a maths scheme of work to get the children to practise using mental and written calculation methods to add three digit numbers with one, two and three digit numbers including informal and formal columnar techniques with exchange between place value. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.