How to calculate 20.36-7.98-5.02-4.36 in a simple way?
20.36-4.36-(7.98+5.02)=16-13=3
900 △ 36 is calculated by a simple method
How to calculate the simple method of 165 × 38-38 × 65
Original formula = 38 * (165-65) = 3800
124 * 38 + 65 * 124 + 76 * 110-76 * 7 calculated by simple method
124*38+65*124+76*110-76*7
=124*(38+65)+76*(110-7)
=124*103+76*103
=103*(124+76)
=103*200
=20600