3.1.1
Method A - Grid Method
Explanation of the Grid Method
Explanation of the Grid Method
Step 1
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
Step 2
- We could split the side lengths up and break the rectangle into sections.
Step 3
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 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
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 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
3Expanding Double Brackets: KS3/4
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