Author : Rajinder Goswami
Applying Tactics in MultiplicationWhile multiplying, we may also use certain tactics to find the answer quickly.Example 189 x 8
For making the above calculation simple we may do as mentioned below89 x 8
= (90 -1) x 8
= 720 – 8
= 712.But avoid bifurcating a number using minus sign as far as possible. The above example can also be solved as follows:89 x 8
= (80 + 9) x 8 Now we have used "80+9" in place of "90-1"
= 640 + 72
= 712Example 265 x 12
= (60 + 5) x 12
= 720 + 60
= 780.OR65 x 12
= 65 x (10+2)
= 650+130
= 780Example 334 x 9
= (30 + 4) x 9
= 270 + 36
= 306Example 4312 x 14
= (300 + 10 +2) x 14
= 4200+140+28
= 4368With a little practice you will be devising your own ways of such manipulations to get the answer quickly and accurately.The above mentioned methods make the things simpler and more accurate, the only thing required is applying these tactics regularly while doing such calculations. So start using this method in your real life to improve your calculating speed.for more such tricks and tactics to make your math simpler, please logon to http://www.magicwithmath.comAuthor is teaching Objective type Math to students for last 25 years.
Keyword : math,simple math,mental math,math tutorials,easy math
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