Multiplying large numbers in your head Learning the nine times table The butterfly method for adding and subtracting fractions ...
Multiplying large numbers in your head
Learning the nine times table
The butterfly method for adding and subtracting fractions
Multiplying by 11 (example: 11×32)
Memorizing Pi
Finding the percentage of a number
Finding a fraction of a whole number
Converting Celcius to Farenheit and vice versa
Multiplying by 6, 7, 8, and 9 using only your hands
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