| Product |
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| Product
(written like multiplication) |
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| combines
columns and pairs all rows |
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| Colors
= Blues x Reds |
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| Column
Rule: If A has x columns, |
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| B has
y columns, A x B has x+y |
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| columns |
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| Row
Rule: If A has m rows, B has |
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| n
rows A x B has mn rows |
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| There’s
divide, |
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| too, but forget it |
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