Can anyone do this calculations w/o the use of calculator/paper+pencil? Just testing your ability of number calculation.
times = multiplied by
12010 times 482
AND
11021 times 76.77
AND
345631 times 452317
AND
32431 divided by 81
If you can do these calculations, tell me how long it took you for each calculation you do using only your brain power.
2006-06-16 15:28:51 · 12 answers · asked by caltam84 3 in Science & Mathematics ➔ Mathematics
well it took me good five min just figure the first one out it 5788820
I don't want to do rest
2006-06-16 15:37:23 · answer #1 · answered by dhaval70 2 · 0⤊ 0⤋
The ol' mental arithmetic is a bit rusty, I'm afraid, and anymore I use pencil and paper if I'm not using a calculator...
Either way, it took me about six or seven minutes each; checked 'em.
Oh, well... Hey, over fifty, OK? We don't expect that sort of mental agility at my age...
2006-06-16 16:09:59 · answer #2 · answered by gandalf 4 · 0⤊ 0⤋
If I tried this with without a calculator and/or just a pencil and paper my head would explode.
2006-06-16 15:32:19 · answer #3 · answered by dcbowls 4 · 0⤊ 0⤋
i'd say about 20-30 seconds for each of the first two. the third i couldn't do in my head. the fourth took closer to 30 seconds, but when i checked with the calc. i made a minor error.
2006-06-16 15:37:03 · answer #4 · answered by andydufresne1982 2 · 0⤊ 0⤋
I have a math degree, but nowadays it seems I can't even add two digit numbers without a calculator.
2006-06-16 15:35:14 · answer #5 · answered by David 4 · 0⤊ 0⤋
I tried the first one mentaly and was off by 144,000 even. It took a few minutes to get the wrong answer. I dont like this question any more.
2006-06-16 15:37:15 · answer #6 · answered by Steve-o 3 · 0⤊ 0⤋
you mean without pencil and paper..then i cant do it..with that i can do these calculations..but that would be a waste of time..when we have so many resources..
2006-06-16 21:01:23 · answer #7 · answered by Vivek 4 · 0⤊ 0⤋
in your head, reconstruct 12010 times 482 as 10000x482 + 2000x482 + 10x482; i.e. 4,820,000 + 964,000 + 4820 = 5,784,000 + 4820 = 5,788,820
apply the same strategy to the other calculations
2006-06-16 16:12:16 · answer #8 · answered by cyberloco 2 · 0⤊ 0⤋
Sorry, no. Well perhaps I could if I had an hour but that hardly seems worth the time.
2006-06-16 15:36:29 · answer #9 · answered by Anonymous · 0⤊ 0⤋
i'm sorry, i would do because i know i can but im too tired to try.. maybe tommorw
2006-06-16 15:30:48 · answer #10 · answered by survivorcrazzy 2 · 0⤊ 0⤋