Teacher2Teacher |
Q&A #5936 |
From: Loyd
To: Teacher2Teacher Public Discussion
Date: 2002012319:53:43
Subject: Re: fractions
On 2002012318:35:57, sarah wrote: > >how do you add and subtract fractions like 1 + 1 > 4 2 >and 1 - 1 and any others like those ones > 2 8 thanks > To solve these problems, we have to convert to like fractions. That is, each fraction will have to have a common denominator. For the first problem, we convert 1/2 to 4ths. 1/2 = 2/4 so, the new problem is: 1/4 + 2/4 = 3/4. In the second problem, we convert 1/2 to eighths. 1/2 = 4/8 so the new problem is: 4/8 - 1/8 = 3/8. It is a good idea to learn to make a table of fraction families. To name a few: 1/2 = 2/4 = 3/6 = 4/8 = 5/10 etc. 1/3 = 2/6 = 3/9 = 4/12 etc. ... ... 1/7 = 2/14 = 3/21 = 4/28 etc. 3/4 = 6/8 = 9/12 = 12/16 etc.
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