Easy Multiplication Shortcut 1

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Today we came back with a New Easy Shortcuts
Go through the Shortcut and if you have any doubts please contact bankers adda in the comment section.

Easy Multiplication Shortcut 1

Multiplying 2-digit numbers where the Unit’s digit add up to 10 and Ten’s digits are same.

Suppose, we want to find the multiplication of two numbers AB & AC (where B + C = 10),
then we can follow the following steps to find the answers –
1.    First find the multiplication of last two digit of both the numbers ie. Find B x C. It will give us last 2 digits of the answer.
2.    Perform operation n x (n+1) on A. It will give us the initial digits of the multiplication.

 Example, find  42 × 48 ?
Both the numbers here start with 4 and the unit digits (2 and 8) add up to 10.
1.    First multiply the unit digit of the number: 2 × 8 = 16
2.    Then multiply 4 by 5 (the succeeding number) to get 20 for the first part of the answer.
3.    So, Required answer is 2016.

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