2.1.2
Method B - Equal Addition Method
Complete the interactive activities in the Seneca app to work towards your CPD certificate.
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
- 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
- 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: KS2/3
2.1Subtraction Methods
2.1.1Method A - Decomposition Method2.1.2Method B - Equal Addition Method2.1.3Method C - Expanded Form Method2.1.4Method D - Partitioning Method2.1.5Method E - Counting-Up Method2.1.6Method F - Constant Difference Method2.1.7Method G - Partial Differences Method2.1.8Method H - Complementary Method2.1.9Method I - Nines Complement Method
3Expanding Double Brackets: KS3/4
Jump to other topics
1Course Overview
1.1Course Structure & Commonly Asked Questions
2Subtraction: KS2/3
2.1Subtraction Methods
2.1.1Method A - Decomposition Method2.1.2Method B - Equal Addition Method2.1.3Method C - Expanded Form Method2.1.4Method D - Partitioning Method2.1.5Method E - Counting-Up Method2.1.6Method F - Constant Difference Method2.1.7Method G - Partial Differences Method2.1.8Method H - Complementary Method2.1.9Method I - Nines Complement Method
3Expanding Double Brackets: KS3/4
Practice questions on Method B - Equal Addition Method
Can you answer these? Complete these activities in the Seneca app to progress towards your certificate.
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