Butterfly method for fractions - keeping for later this year to help Hobbit.
Interesting multiplication "tricks" that students might enjoy--may even have students explain why the tricks work
I think this actually works! Except wouldn't it be dropping the last digit?
ANY equation. It would even compare the height of the empire state building to the length of the golden gate bridge.
6. Secret To Remembering The Numbers In Pi and the secret to a good day!
7 Math Hacks That Will Change Your Lives! My Dad was a math teacher and he taught these to me....very well worth learning!!
Fractions Part 2- With a FREEBIE!
2. How To Multiply Large Numbers In Your Head
I do better when I can see how you got to the answer hack
How have I lived without these?