Subtraction Strategies - Presentation
This step-by-step presentation guides students through completing subtraction problems using a variety of strategies. The four strategies taught in this presentation are:
- Split
- Jump
- Compensation
- The Algorithm
The presentation is part of a larger unit of work on Subtraction Strategies- Year 3.
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Learning goals
- We are learning to add and subtract two-and three-digit numbers using place value groupings.
- We are learning to partition, rearrange and regroup numbers to 10 000 using place value groupings.
Curriculum alignment
AC9M3N03
9
Add and subtract two- and three-digit numbers using place value to partition, rearrange and regroup numbers to assist in calculations without a calculator
ACMNA053
8.4
Apply place value to partition, rearrange and regroup numbers to at least 10 000 to assist calculations and solve problems
MA2-1WM
old
Uses appropriate terminology to describe, and symbols to represent, mathematical ideas
MA2-2WM
old
Selects and uses appropriate mental or written strategies, or technology, to solve problems
MA2-3WM
old
Checks the accuracy of a statement and explains the reasoning used
MA2-4NA
old
Applies place value to order, read and represent numbers of up to five digits
MA2-RN-01
new
Applies an understanding of place value and the role of zero to represent numbers to at least tens of thousands
MA2-RN-02
new
Represents and compares decimals up to 2 decimal places using place value
MA2-AR-01
new
Selects and uses mental and written strategies for addition and subtraction involving 2- and 3-digit numbers
MA2-AR-02
new
Completes number sentences involving addition and subtraction by finding missing values
Australian Curriculum covers QLD / SA / WA / NT / TAS / ACT.
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