2.1.2
Method B - Equal Addition Method
Equal Addition Method - Core Principle
Equal Addition Method - Core Principle
Here we need to understand the principle that if we add or subtract the same number from both the minuend and subtrahend, then the difference doesn’t change.
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Using a number line
Using a number line
- It’s a good idea to demonstrate this on a number line.
- Here, we can see that the difference between 8 and 3 is 5.
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Adding 2 - number line example
Adding 2 - number line example
- If we add 2 to both numbers, we’ve essentially translated our subtraction up the number line; the difference remains the same.
1Course Overview
1.1Course Structure & Commonly Asked Questions
2Subtraction Methods
2.1Subtraction Methods
2.1.1Method A - Decomposition Method
2.1.2Method B - Equal Addition Method
2.1.3Method C - Expanded Form Method
2.1.4Method D - Partitioning Method
2.1.5Method E - Counting-Up Method
2.1.6Method F - Constant Difference Method
2.1.7Method G - Partial Differences Method
2.1.8Method H - Complementary Method
2.1.9Method I - Nines Complement Method
Jump to other topics
1Course Overview
1.1Course Structure & Commonly Asked Questions
2Subtraction Methods
2.1Subtraction Methods
2.1.1Method A - Decomposition Method
2.1.2Method B - Equal Addition Method
2.1.3Method C - Expanded Form Method
2.1.4Method D - Partitioning Method
2.1.5Method E - Counting-Up Method
2.1.6Method F - Constant Difference Method
2.1.7Method G - Partial Differences Method
2.1.8Method H - Complementary Method
2.1.9Method I - Nines Complement Method
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