cathmom Posted January 31, 2010 Share Posted January 31, 2010 Does this exist? I mean, for example, you have 47/7. A normal calculator shows 6.7142857. This calculator would show 6 R 5 instead. Does it exist? TIA! Quote Link to comment Share on other sites More sharing options...
TravelingChris Posted January 31, 2010 Share Posted January 31, 2010 I have never seen one. Quote Link to comment Share on other sites More sharing options...
nmoira Posted January 31, 2010 Share Posted January 31, 2010 I mean, for example, you have 47/7. A normal calculator shows 6.7142857. This calculator would show 6 R 5 instead. Does it exist? You probably know this but you can find the remainder by: 47/7 [6.7142857] -6 [0.7142857] *7 [5] 47/7 = 6R5 Quote Link to comment Share on other sites More sharing options...
cathmom Posted January 31, 2010 Author Share Posted January 31, 2010 You probably know this but you can find the remainder by: 47/7 [6.7142857] -6 [0.7142857] *7 [5] 47/7 = 6R5 Huh? I get that you subtracted the 6, but what did you do after that? Quote Link to comment Share on other sites More sharing options...
DarlaS Posted January 31, 2010 Share Posted January 31, 2010 Huh? I get that you subtracted the 6, but what did you do after that? She multiplied by 7--the number you divided by in the first place effectively cancelling out the division. I never would have thought of that. Cool! I come here as much for MY education. :D Quote Link to comment Share on other sites More sharing options...
nmoira Posted January 31, 2010 Share Posted January 31, 2010 Huh? I get that you subtracted the 6, but what did you do after that? The remainder can be expressed as a fraction: 5/2 = 2 R1 = 2 1/2 4/3 = 1 R1 = 1 1/3 5/2 = 1 R 2 = 1 2/3 Back to the original example: 47/7 [6.7142857] -6 [0.7142857] *7 [5] .7142857 is the decimal remainder of 47/7, Let x be the remainder (i.e. 47/7 = 6Rx = 6 x/7) so .7142857 = x/7 and x = .7152857 * 7 = 5 Quote Link to comment Share on other sites More sharing options...
cathmom Posted January 31, 2010 Author Share Posted January 31, 2010 The remainder can be expressed as a fraction: 5/2 = 2 R1 = 2 1/2 4/3 = 1 R1 = 1 1/3 5/2 = 1 R 2 = 1 2/3 Back to the original example: 47/7 [6.7142857] -6 [0.7142857] *7 [5] .7142857 is the decimal remainder of 47/7, Let x be the remainder (i.e. 47/7 = 6Rx = 6 x/7) so .7142857 = x/7 and x = .7152857 * 7 = 5 OK, I think I am following that on my 5 hours sleep - maybe - but it certainly would not help my dyslexic child LOL! Which is why I was looking for the calculator that shows a remainder. Quote Link to comment Share on other sites More sharing options...
nukeswife Posted January 31, 2010 Share Posted January 31, 2010 (edited) I was just looking at the TI site and in the tour of the TI 15 is says the Integer divide key would show a whole number remainder. You may want to check it out. I was just looking at the demos and it will also show them as a fraction using different keys. There is also a TI-10 which has a default setting of a quotient/whole number remainder setting. Edited January 31, 2010 by nukeswife Quote Link to comment Share on other sites More sharing options...
nmoira Posted January 31, 2010 Share Posted January 31, 2010 OK, I think I am following that on my 5 hours sleep - maybe - but it certainly would not help my dyslexic child LOL! Which is why I was looking for the calculator that shows a remainder.If you're using it to check work, just show the algorithm. 1. Do the division 2. Subtract the whole number 3. multiply by the divisor 4. If the answer is not a whole number or *very* close to a whole number, a mistake has been made and repeat 1-3 Quote Link to comment Share on other sites More sharing options...
cathmom Posted January 31, 2010 Author Share Posted January 31, 2010 I was just looking at the TI site and in the tour of the TI 15 is says the Integer divide key would show a whole number remainder. You may want to check it out. I was just looking at the demos and it will also show them as a fraction using different keys. There is also a TI-10 which has a default setting of a quotient/whole number remainder setting. Thanks! I will check these out. Quote Link to comment Share on other sites More sharing options...
stripe Posted January 31, 2010 Share Posted January 31, 2010 You could try this online, too: http://www.analyzemath.com/Calculators_3/quotient_remainder.html http://www.mathcelebrity.com/longdiv.php (shows steps) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.