Question

If we are to add three numbers like 126+231+542, then what rules should we follow in compensation method?

Answer 1

126 + 231 + 542 = (100 + 20 + 6) + (200 + 30 + 1) + (500 + 40 + 2) = (100 + 200 + 500) + (20 + 30 + 40) + (6 + 1 + 2)

= 800 + 90 + 9 = 800 + 99 = 800 + (100 – 1) = 900 – 1 = 899