Teaching Presentation: Mental subtraction – counting up ( Year 3 Addition and Subtraction )

This presentation provides three days of teaching that cover the objectives:

• Mental subtraction – counting up
  It includes starter activities, whole class teaching, group activities, practice sheets and mastery questions. It can be used on a variety of interactive whiteboards.

Day 1 Teaching
Remind children of Maths Frog. Demonstrate how we can count up along an empty number line using Frog to work out the difference between 87 and 102. Model several subtractions.

Day 2 Teaching
Demonstrate counting up using Frog hopping along a number line to show how we calculate 113 – 78. Stress how we add the hops to find the answer.

Day 3 Teaching
Use Frog and the empty number line to perform subtractions (112 – 76) and make deliberate errors which children have to correct.

This teaching is part of Hamilton’s Year 3 Addition and Subtraction block. Each Hamilton maths block contains a complete set of planning and resources to teach a term’s worth of objectives for one of the National Curriculum for England’s maths areas.