How to work out percentages INSTANTLY
9:03
Math Tricks for INSTANT Calculation
15:19
Rate Grade 8
2:06
Sharing into a ratio
8:45
Percentage made easy - Five percentage tricks and shortcuts
17:00
Solving Percent Problems
9:45
Cálculo de porcentagens | Como encontrar uma porcentagem de um número
5:37
Solve Percentages in Your Head in seconds -» Easy Percentage Trick
8:53