Question

short tricks for maths calculation?

Answer 1

Answer:

Squaring

In this simple trick, we need to modify the equation and make the units digit zero. After all, it is easy to multiply when units digit is zero.

For example - Find square of 43

= (43+3) × (43-3) + (3×3)

=(46×40) + 9

= (460×4) + 9

= 1840 + 9 = 1849