Activities in this teaching pack include a set of differentiated worksheets to add two digit numbers and tens using counting on to calculate the prices of some of the items that might be needed for a family party at Christmas such as food and decorations.

The interactive presentation gets the children to explore how to use counting on to add two digit numbers and tens to calculate the prices of items needed for a family party at Christmas.

This lesson is part of a maths scheme of work to get the children to practise using mental calculations and informal written calculations to add and subtract pairs of two digit numbers. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.