# Fast Multiplication Tricks

## Simple Fast Multiplication Tricks & Techniques

Fast Multiplication by 5: Multiply by 10 (just place 0 after the original number) and divide the result by 2.
Fast Multiplication by 6: Sometimes subsequent multiplication by 3 and then 2 is easy.
Fast Multiplication by 9: Multiply by 10 (just place 0 after the original number) and subtract the original number.
Multiply by 12: Multiply by 10 and add twice the original number.
Multiply by 13: Multiply by 3 and add 10 times original number.
Multiply by 14: Multiply by 7 and then multiply by 2
Multiply by 15: Multiply by 10 and add 5 times the original number, as above.
Multiply by 16: You can double four times, if you want to. Or you can multiply by 8 and then by 2.
Multiply by 17: Multiply by 7 and add 10 times original number.
Multiply by 18: Multiply by 20 and subtract twice the original number (which is obvious from the first step).
Multiply by 19: Multiply by 20 and subtract the original number.
Multiply by 24: Multiply by 8 and then multiply by 3.
Multiply by 27: Multiply by 30 and subtract 3 times the original number (which is obvious from the first step).
Multiply by 45: Multiply by 50 and subtract 5 times the original number (which is obvious from the first step).
Multiply by 90: Multiply by 9 (as above) and put a zero on the right.
Multiply by 98: Multiply by 100 (just place 00 after the original number)and subtract twice the original number.
Multiply by 99: Multiply by 100 (just place 00 after the original number)and subtract the original number.

Did you liked the above fast multiplication tricks ?

#### Vineet Patawari

Hi, I'm Vineet Patawari. I fell in love with numbers after being scared of them for quite some time. Now, I'm here to make you feel comfortable with numbers and help you get rid of Math Phobia!

## 20 thoughts to “Fast Multiplication Tricks”

1. anu says:

suggest a shortcut to find how many nos between 1-200 divisible by 7 and such similar problems

2. namrita says:

thanks for these tricks. Are these from the book “quicker maths by m.tyra” ?

3. namrita says:

nice tricks. r these from the book “quicker maths by m.tyra” ?

4. sumith says:

very nice

5. Mayamma says:

Good Site….bt the tricks should be elaborated with examples….expect more of such tricks to be posted here.

Good work Vinnet.Really appreciate u:)

6. soumya says:

2568*99=254232
2568*100-2568=254232…
its working…n the tricks r amazing…:-)

7. Iswarya says:

its not worthy but can do better

8. kiran says:

thANK u

9. avneet says:

10. No, need to improve it is spectacular!!!!!!!!!

11. Bharu says:

Mokkaya irukku..

12. This Can Surely Help Me in my Science High School Entrance Exam !

13. you must give good tricks…except thats worts tricks…….bcs i knew it before.

14. Ranjit says:

this is aweosme

15. We request users to come up for example because now it becomes very easy and can always be cross checked

16. Vinod Gandhi says:

A good one…must give useful examples too