3.1.1
Method A - Grid Method
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Explanation of the Grid Method
Step 1
- Think about multiplication in terms of area.
- For (x + 4)(x + 2), imagine we have a rectangle with side lengths x + 4 and x + 2.
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Step 2
- We could split the side lengths up and break the rectangle into sections.
Step 3
- We could then find the total area of the rectangle by summing the area of each section. Pupils should already be able to do this with numerical side lengths and compound shapes.
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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
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