Видео ютуба по тегу Tricky Percentage

Math Antics - Finding A Percent Of A Number
Math Antics - Finding A Percent Of A Number
How to work out percentages INSTANTLY
How to work out percentages INSTANTLY
Easy Percentage Trick you were Never Taught at School!
Easy Percentage Trick you were Never Taught at School!
People% of 99 Don't Know this Secret Math Trick | Crazy Math Percentage Trick
People% of 99 Don't Know this Secret Math Trick | Crazy Math Percentage Trick
Процентные хитрости: как посчитать проценты за секунды. Устный счёт - 15
Процентные хитрости: как посчитать проценты за секунды. Устный счёт - 15