User Controls
Be honest and don't use a calculator. Set a timer for 10 seconds and solve this math problem before it expires:
-
2017-05-27 at 4:27 AM UTC
-
2017-05-27 at 4:28 AM UTC
Originally posted by Captain Falcon I'm not going to open the common core can of worms but the only people who oppose it are regards who practice childsex. All intelligent people who actually understand it, support common core.
Im not going to open the comm--
*OPENS CAN*
Fuck you. Common core for the common bitch. -
2017-05-27 at 5:12 AM UTCI don't know anything about common core but I want to say that I think it's a good thing.
-
2017-05-27 at 6:07 AM UTC
Originally posted by Lanny I don't know anything about common core but I want to say that I think it's a good thing.
It's a standardised curriculum for US schools to adhere to, rather than running roughshod all over everything and teaching whatever cockamamie bullshit they want. The most important part is mathematics. The only real argument about it is some nutjobs who think it is obama trying to turn their kids into muslims or some shit. -
2017-05-27 at 6:12 AM UTCdumb niggers
-
2017-05-27 at 9:48 AM UTCI didn't even try tbh, I'm a dumb shit.
-
2017-05-27 at 12:16 PM UTCSimple
8x1.5=12 -
2017-05-27 at 1:43 PM UTCNIGGA WUT MAKES U THINK I WANNA DO MATH WEN YOU KNOW DAT SHIT IZ JUS A TRICK BY WHITE MAN
-
2017-05-27 at 2:05 PM UTC
-
2017-05-27 at 2:06 PM UTC
-
2017-05-27 at 2:21 PM UTC
-
2017-05-27 at 2:24 PM UTCRelated question: how would you go about finding 85% of something? Would you find 15% and then subtract that amount from the original amount or would you add up 8 of the 10% findings and then a 5%? Or would you use a different method?
-
2017-05-27 at 2:37 PM UTCI just multiplied it, the numbers involved are pretty simple. Then just add the decimal at the appropriate position.
How the hell do people not know basic math like this? -
2017-05-27 at 2:43 PM UTC
Originally posted by Darth Beaver If you want a percentage just move the decimal to the left one spot and multiply.
87% of 47 for example.
4.7 * 8.7 = 40.89
Yeah but do you just do 4.7 * 8.7 in your head? If you have that down then I'd like to hear your mental breakdown of that calculation. It took me about 30 seconds to get it like this:
Break 87% down into 50%, 25%, 10% and 2%.
So
50% = 47/2 = 23.5
25% = 23.5/2 = 11.75
10% = 47/10 = 4.7
2% = 47/100 *2 = 0.47*2 = 0.94
Then I'd add up the decimals and the whole numbers, then those two numbers
0.5+0.75+0.7+0.94 = 2.89
23+11+4 = 38
38 + 2.89 = 40.89
This is more ordered, while actually doing it, I ignored the decimals first after taking the percentages and did the whole numbers, and got to 38, then I did the decimals. -
2017-05-27 at 2:44 PM UTC
-
2017-05-27 at 2:47 PM UTC
Originally posted by Ajax Related question: how would you go about finding 85% of something? Would you find 15% and then subtract that amount from the original amount or would you add up 8 of the 10% findings and then a 5%? Or would you use a different method?
I find it easier, even if it's a bit slower, to approach numbers from below, additively. So for example, I'd first try to break it into 75% and then 10%. If it isn't easy to divide into 3/4ths, then 50% + 25% + 10%.
It's my belief that you will never make a maths mistake if you just follow procedures correctly and in order, and are willing to think clearly and steadily. And the more you practice it, the better you get. -
2017-05-27 at 2:47 PM UTC
-
2017-05-27 at 3:23 PM UTC
Originally posted by Captain Falcon Yeah but do you just do 4.7 * 8.7 in your head? If you have that down then I'd like to hear your mental breakdown of that calculation. It took me about 30 seconds to get it like this:
Break 87% down into 50%, 25%, 10% and 2%.
So
50% = 47/2 = 23.5
25% = 23.5/2 = 11.75
10% = 47/10 = 4.7
2% = 47/100 *2 = 0.47*2 = 0.94
Then I'd add up the decimals and the whole numbers, then those two numbers
0.5+0.75+0.7+0.94 = 2.89
23+11+4 = 38
38 + 2.89 = 40.89
This is more ordered, while actually doing it, I ignored the decimals first after taking the percentages and did the whole numbers, and got to 38, then I did the decimals.
Yes, I can multiply 4.7*8.7 easily in my head. It works like this.
47 * 8 = 376 so 4.7 * 8 = 37.6
47 * 7 = 329 so 4.7 *. 7 = 3.29
37.6 + 3.29 = 40.89
If you can remember two numbers for 5 secs it's not difficult. -
2017-05-27 at 3:26 PM UTC
Originally posted by Lanny I don't know anything about common core but I want to say that I think it's a good thing.
because you're a sub-average intelligence contrarian. your entire personality is based on feeling like you're cooler than most people, but also better through a sort of pseudonormalcy. -
2017-05-27 at 5:40 PM UTC
