Multiplication of 9 with any number

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

Multiplication of 9 with any number

Let me explain this rule by taking examples
1. 18*9 = 18*(10-1) = 18*10-18 = 180-18 = 162.
2. 187*9 = 187*(10-1) = 1870-187 = 1683.

Example.

Example.
Understand the rule by 1 more example
1864*9 = 1864*(10-1) = 18640-1864 = 16776

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