## 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** ?

Please leave a comment below, that will help us to improve

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

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

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

very nice

best site erver

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:)

2568*99=254232

2568*100-2568=254232…

its working…n the tricks r amazing…:-)

its not worthy but can do better

thANK u

i know already this tricks

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

waste site

Mokkaya irukku..

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

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

this is aweosme

Thanks Ranjit 😉

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

A good one…must give useful examples too