Видео с ютуба Calculation Speed Trick For Bank

Как считать быстрее калькулятора — Устный счёт №2 | Сложение и вычитание

Practical advice to increase Calculation Speed before IBPS RRB PO / Clerk Pre Papers | Aashish Arora

All Calculation Tricks in One Video | Master Addition, Subtraction, Multiplication, Square/Cube Root

Basics of Maths For All SSC & Bank Exam | All Calculation Techniques | By Navneet Sir