Whole Number Coefficients

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Jynelle Brillantes 1E
Posts: 8
Joined: Wed Nov 16, 2016 3:02 am

Whole Number Coefficients

Postby Jynelle Brillantes 1E » Fri Jun 30, 2017 9:30 pm

When writing empirical formulas, is there a trick to knowing what to multiply your decimals by in order to get whole numbers, or do I have to guess and check?

For example, I got coefficients of 1, 1, and 2.381 in a problem I was working through. What should I multiply 2.381 by in order to get a whole number?

alexis castro 1B
Posts: 30
Joined: Wed Nov 16, 2016 3:02 am

Re: Whole Number Coefficients

Postby alexis castro 1B » Fri Jun 30, 2017 10:13 pm

Ya it is pretty much guess and check but my TA said you shouldn't be multiplying by anything bigger than 4 or 5

Dabin Kang 1B
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Joined: Fri Jun 23, 2017 11:39 am
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Re: Whole Number Coefficients

Postby Dabin Kang 1B » Sat Jul 01, 2017 1:37 pm

You can also convert them to fractions and multiply by the denominator.

For example, you can convert 1.666 to and multiply by 3 to get 5.

Alma Cruz 1A
Posts: 21
Joined: Fri Jun 23, 2017 11:40 am

Re: Whole Number Coefficients

Postby Alma Cruz 1A » Sat Jul 01, 2017 2:13 pm

Try to multiply it by a number that will give you the decimal closest to a whole number (if yet not given a whole number).
For example, let's say your number is 1.33, one would multiply it by a 3 in order to obtain 3.9970..., which would give you the closest to a whole number, 4.

Timothy Kao 1B
Posts: 28
Joined: Fri Jun 23, 2017 11:39 am

Re: Whole Number Coefficients

Postby Timothy Kao 1B » Sun Jul 02, 2017 7:38 am

From my experience, when you're first starting to do these types of problems, it's a lot of guessing and checking, but after you've done enough practice problems, you get to the point where when you see the decimals you'll intuitively know what you should multiply by.

Alejandra Reyna 1E
Posts: 18
Joined: Wed Sep 21, 2016 2:58 pm

Re: Whole Number Coefficients

Postby Alejandra Reyna 1E » Sun Jul 02, 2017 11:03 pm

I definitely agree with Dabin Kang. It becomes much easier when you convert to fractions rather than multiplying by big numbers from the beginning. It lessens the time to determine your final formulas and is a lot simpler.


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