[Hey, Today i'am going to show you a trick that many of you would like have fun :D !]
General Chapter : The " multiplying file "
Multiplying by 12 shortcut
So how does the 12's shortcut work?
Let's take a look.
12 X 7
the first thing is to always multiply the 1 of the twelve by the number we are multiplying
by, in this case 7.
So 1 X 7 = 7.
Multiply this 7 by 10 giving 70. (Why? We are working with BASES here. Bases are the
fundamentals to easy calculations for all multiplication tables.
Now multiply the 7 by the 2 of twelve giving 14. Add this to 70 giving 84.
Therefore 7 X 12 = 84
Let's try another:
17 X 12
Remember, multiply the 17 by the 1 in 12 and multiply by 10
(Just add a zero to the end):
1 X 17 = 17, multiplied by 10 giving 170.
Multiply 17 by 2 giving 34.
Add 34 to 170 giving 204.
So 17 X 12 = 204
lets go one more
24 X 12
Multiply 24 X 1 = 24. Multiply by 10 giving 240.
Multiply 24 by 2 = 48. Add to 240 giving us 288
24 X 12 = 288 (these are Seriously Simple Sums to do aren’t they?!)
YOU ARE READING
Math-Trick's
RandomHello friend ! Are you ready to open your mind for some fun learning ( if you love Math your are welcome Here you found your place :) ! if you hate Math You are welcome too! you will learn some things that you could be useful to get lazyer !
