Multiplication of 999 with any number

Maths Tricks , short cut tricks for maths to make calculation easy and fast

Multiplication of 999 with any number

Let me explain this rule by taking examples
1. 51*999 = 51*(1000-1) = 51*1000-51 = 51000-51 = 50949.
2. 147*999 = 147*(1000-1) = 147000-147 = 146853.

Example.

Understand the rule by 1 more example
3825*999 = 3825*(1000-1) = 3825000-3825 = 3821175

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