Видео ютуба по тегу Hand Calculation Tricks

Trick To Always Remember Your Times Table (6 to 10)
Trick To Always Remember Your Times Table (6 to 10)
Finger Mathematics - How to calculate Faster than a calculator Mental maths - 10
Finger Mathematics - How to calculate Faster than a calculator Mental maths - 10
Doing abacus in Hands. Advanced calculations in seconds!!!!
Doing abacus in Hands. Advanced calculations in seconds!!!!
How to Calculate Faster than a Calculator - Mental Maths #1
How to Calculate Faster than a Calculator - Mental Maths #1
How I learned to Calculate Extremely Fast
How I learned to Calculate Extremely Fast
How to Calculate Faster than a Calculator - Mental Math #1
How to Calculate Faster than a Calculator - Mental Math #1