Видео ютуба по тегу Calculation Short Cuts

How to Calculate Faster than a Calculator - Mental Math #1
How to Calculate Faster than a Calculator - Mental Math #1
How to Use the UCAT Calculator (Memory, Shortcuts & more!) | KharmaMedic
How to Use the UCAT Calculator (Memory, Shortcuts & more!) | KharmaMedic
20 быстрых приемов Excel, которые сэкономят вам часы работы
20 быстрых приемов Excel, которые сэкономят вам часы работы
Mental Math Tricks - Addition, Subtraction, Multiplication & Division!
Mental Math Tricks - Addition, Subtraction, Multiplication & Division!