A 41-slide teaching presentation to use when exploring subtraction strategies.
Before moving on to the written vertical algorithm for subtraction, lay a strong foundation and understanding of these mental computation strategies.
As there are a number of strategies covered in this presentation, it is assumed that the slides will be viewed over numerous lessons.
The following strategies are addressed:
- counting back
- counting on
- using known facts such as rainbow facts, doubles, subtracting 10
- making tens (partitioning to numbers that end in zero)
- using fact families to think addition in order to subtract
- jump strategy
- split strategy
- regrouping (trading).
This PowerPoint includes hyperlinks to the following subtraction teaching resources:
- Making Tens Subtraction Worksheet
- Missing Addends Avenue Worksheet
- Jump Strategy Subtraction Game
- Split Strategy Subtraction Dominoes
- Trade It Board Game
Download this resource as part of a larger resource pack or Unit Plan.
Australian Curriculum alignment
Apply place value to partition, rearrange and regroup numbers to at least 10 000 to assist calculations and solve problems
Recognise and explain the connection between addition and subtraction
Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation
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