Видео ютуба по тегу Percentage Of Maths Fast Method

Процентные хитрости: как посчитать проценты за секунды. Устный счёт - 15
Процентные хитрости: как посчитать проценты за секунды. Устный счёт - 15
How To Find The Percent of a Number Fast!
How To Find The Percent of a Number Fast!
How I learned to Calculate Extremely Fast
How I learned to Calculate Extremely Fast
Math Antics - Finding A Percent Of A Number
Math Antics - Finding A Percent Of A Number
How to Calculate Faster than a Calculator - Mental Math #1
How to Calculate Faster than a Calculator - Mental Math #1
Percentages made easy - fast shortcut trick!
Percentages made easy - fast shortcut trick!