Butterfly method for fractions - keeping for later this year to help Hobbit.
Caution: These tricks should only be taught to children AFTER they have a firm understanding of how to do these math skills.
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Interesting multiplication "tricks" that students might enjoy--may even have students explain why the tricks work
Japanese Multiplication - 3 seconds to learn how to multiply. Why didn't they have this when I was a kid? I want this taught to my kids!
I think this actually works! Except wouldn't it be dropping the last digit?
Math Hacks (A slightly different way to convert C to F: double it, subtract the first digit, then add 32. Eg, 22C .. X2 = 44 .. Subtract the first digit (4) 44-4=40. Now add 32. 40+32=72.)