You can easily solve multiplication problem in few second by using this trick.

2. Multiplication Tricks

3. 1) 2 digit 1 digit
A B 2 3 2 3 7 6 7 6
* C * 7 * 7 * 9 * 9
_______ ____ _____ _____ ______
L  R 14 1(4+2)1 63 6(3+5)4
=161 =684

4. 2) 2 digit 2 digit
A B A B A B
* C D * C D * C D
______ __________ _________
A * C (A*D)+(B*C) B * D

5. Example -
7 5 7 5 7 5
* 6 3 * 6 3 * 6 3
________ ________ _________
42|?|? 42+5|1|? 47|1+1|5
=47|1|? =4725

6. 3) 3 digit 1 digit
A B C
* D
___________
A*D|B*D|C*D

7. Example -
4 5 6 4 5 6 4 5 6
* 3 * 3 * 3
________ _________ _________
12|?|? =12+1|5|? =13|5+1|8
=13|5|? =1368

8. 3) 3 digit 3 digit
A B C A B C A B C A B C A B C
X Y Z X Y Z X Y Z X Y Z X Y Z

9. Example -
7 6 5 7 6 5 7 6 5
* 1 2 3 * 1 2 3 * 1 2 3
________ ___________ __________
7|?|?|?|? 7+2|0|?|?|? 9|0+3|8|?|?
=9|0|?|?|?|? =9|3|8|?|?
7 6 5 7 6 5
* 1 2 3 * 1 2 3
___________ __________
9|3|8+2|8|? 9|4|0|8+1|5
=9|4|0|8|? =94095

10. THANK YOU
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