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Cool math tricks!
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| Sunsnail |
Here are some neat math short-cuts that you can do in your head
142
213
+431
When you see a math problem like this, you were probably taught to add the right-most column first. Then the middle, then the left-most. But, doing it from left to right is actually much faster!
Start with the left column. 1+2+4 is 7. Keep 700 in your mind. Then add the middle column. 740 -> 750 -> 780. Then the last column. 782 -> 785 -> 786
See how much faster and quicker that was? :p
Here's another one:
346
473
+170
So, first add the left column. 8(00). Then the middle column. 180. Uh-oh, its more than 100. So add 100 to 800, and you're left with just 80. Now the last column: 989 is the final answer!
Here's one with multiplication:
24
x12
Now, do the right column. 2x4=8. Now, cross multiply 4x1, and 2x2, and add the sum together. which is 8. Now multiply The left column, 2x1. Which is 2. The answer is 288. Pretty cool huh? :wtf:
Here are some more problems to practice with. Check them with a calculator to see if you're right.
63
x52
532
125
+842
32
x64 |
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| stren |
| math is not cool...EVER |
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| sandstorm03 |
| kinda interesting, where did u get it? |
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| Sunsnail |
| I went over to a friend's house, and his mother teaches math. :toothless |
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| Omega_Blue |
whoa. i'd rather just use a calculator. if you multiply any two digit number with 11 like
12
x
11
then it's just 1 + 2 inbetween 1 and 2. so 12x11 is 132 cuz 1 + 2 =3 and you just put the "3" inbetween the 1 and 2. 13x11 = 143, etc. I saw it on an infomercial once. gaah. i hate math. |
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| mellow_head |
what the hell?:D
E=mc˛?:p |
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| djkoolaide |
| I hate math :whip: |
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| Basstard |
| i bet sunsnail is last on TA to bang jennypie |
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| kr00t0n |
| I wish that was all there was to maths back in school, I could even handle algebra, it's the blasted trigonometry that raped my brain :( |
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| Sunsnail |
I'm sure there's someone else who likes math :wtf:
I know this is basic adding and subtracting, but it's faster than the conventional methods |
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| ierxium |
Calculus, according to friends, is the hardest. From then on theories and everything else is easy to swallow.
1=1? How can one number be equal to another? I could never see that. Anyway, as you were.
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| Basstard |
calculus is fuggin easy dont have any1 tell u anything different.
take 3x^2 (this means 3x to the power of 2)
if u differentiate this u get:
6x
take 4x^3
u get 12x^2
integration is just the reverse.
there - u know calculus! |
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