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Multiplication with tricks 12

You can use regrouping (multiply the ones, regroup if necessary ("carry) and then multiply the tens). OR, you can use the 11s. 5x12 equals 5x11 + another 5, which is 55+5. This is what is shown on the cards.
AB
12x012x0=0 Anything times zero is zero
12x112x1=12 Anything times 1 is itself
12x212x2=24 Think 11x2=22, then add 2 more
12x312x3=36 Think: 11x3=33, then add 3 more
12x412x4=48 Think: 11x4=44, then add 4 more
12x512x5=60 Think: 11x5=55, then add 5 more
12x612x6=72 Think: 11x6=66, then add 6 more
12x712x7=84 Think:11x7=77, then add 7 more
12x812x8=96 Think:11x8=88, then add 8 more
12x912x9=9=108 Think:11x9=99, then add 9 more
12x1012x10=120 Anything times ten, add a zero to the end
12x1112x11=132 Think: 12x10=120, then add 12 more to get 132
12x1212x12=144 Think: 12x11=132, then add 12 more to get 144. (This one is usually easy to memorize because it is the higheest number for multiplying numbers 1 through 12


Cutler's Class
Third Grade Teacher
Southern California, CA

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