Here's another: If you are multiplying two two-digit numbers that happen to be equally far away from a number easily multiplied by itself you can turn it into a simpler problem e.g. 9 x 11 = 10 x 10 – 1. 8 x 12 = 10 x 10 – 4. 67 x 73 = 70 x 70 – 9. 85 x 95 = 90 x 90 – 25. Just remember to square the number of hops the bunnies each made on the number line to meet in the middle, then subtract.

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for that second one i got the answer faster just by taking 230+46. 23(12)=23(10)+23(2).

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0:28 When I did that one time my math teacher looked like she wanted to call me a noob lol (in middle school)

Hey, Check how Algebra is really easy!!

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Here's another: If you are multiplying two two-digit numbers that happen to be equally far away from a number easily multiplied by itself you can turn it into a simpler problem e.g. 9 x 11 = 10 x 10 – 1. 8 x 12 = 10 x 10 – 4. 67 x 73 = 70 x 70 – 9. 85 x 95 = 90 x 90 – 25. Just remember to square the number of hops the bunnies each made on the number line to meet in the middle, then subtract.

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