on the bright side page, i decided to recall 9 quick calculation tips that i learned from elementary school, which most of us forget, make life easier. invite you to consult!
if you have difficulty solving simple math problems, then it is not your fault. the problem is that no one teaches you simple but super fast math tips at school. here are 11
math is a logical and logical science subject, but even so there are many tips to simplify the problem as if it is super hard and troublesome. the logic of mathematics sometimes