Percentage Trick - Solve precentages mentally - percentages made easy with the cool math trick!
5:42
Percentages made easy - fast shortcut trick!
16:23
Fast Mental Multiplication Trick - Multiply in your head using base 20 and 30
11:36
Percentages Made Easy!
11:33
Percentage Math Trick 2 - Solve percentages mentally - percentages made easy!
9:46
Square root in 3 seconds - math trick
5:10
How to work out percentages INSTANTLY
6:15
Fast Percentage Calculations in Mind!
6:32