math tricks

Well, it depends on what kind of mental math you are doing. There are multitudes of tricks if you want to get started. (And the biggest "trick" is probably just practice.) This site has a lot of tricks for all sorts of numbers (two digit multiplication to squaring numbers ending in five and so on): http://mathforum.org/k12/mathtips/beatcalc.html Personally, I tend to stick to quick estimations using this method. Let's say you have two numbers you want to multiply, say 45×56. I would split either number into its tens and ones and distribute it into the other: (40+5)56 = 40×56+5×56 = 2240+280 = 2520 It's relatively easy to multiply 40 by 56 (it's just like multiplying a single digit number by a double digit one), so the answer comes faster. Or, to make it even easier: (40+5)(50+6) = 40×50+40×6+5×50+5×6 = 2000+240+250+30 = 2520. Don't you just love the parade of zeroes? Anyways, good luck. :]

dude its easy all u have to do is do the mental math everytime...even if u don't get it rewind and do it again....is simply but requires patience...if thnk u can do it give it a try...