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Multiplication- Trick directions

These are all the multiplication tricks for 0's, 1's, 2's,5's, 9's, 10's, and 11's. Also tricks for equations with an even factor times an even factor, an even factor times an odd factor, and an odd factor times an odd factor.
AB
0 times a factoralways equals 0
1 times a factoralways equals the factor
2 times a factorcount by 2's up to that factor
5 times a factorcount by fives up to the factor
9 times a factoruse the 9's finger tricks
10 times a factorcount by 10's up to that factor
11 times a factorthat factor in the ones and tens place (ie 9x11=99)
even factor times even factorproduct is even
even factor times odd factorproduct is even
odd factor times odd factorproduct is odd

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