Adding and Subtracting Fractions with the Same Denominator - By tecmath
Transcript
| 00:0-1 | Good day , Welcome to Tech Mouth channel . What | |
| 00:01 | we're going to be having a look at in this | |
| 00:02 | video is how to add and subtract fractions . There's | |
| 00:06 | going to be a couple of different parts of this | |
| 00:07 | . We're going to start up by having a look | |
| 00:08 | at first off adding and subtracting fractions with the same | |
| 00:12 | denominators , that is the same bottom number . And | |
| 00:15 | then we're gonna move on to ones with different denominators | |
| 00:17 | . And then what we're gonna do is we're going | |
| 00:18 | to have a look at how to add and subtract | |
| 00:20 | fractions involving mixed numbers . So , uh , sit | |
| 00:23 | back and enjoy . So the first thing we're going | |
| 00:25 | to have a look at is adding and subtracting fractions | |
| 00:28 | where they have the same denominators . An example of | |
| 00:30 | this could be say we were to get 1/8 entered | |
| 00:34 | this , we were going to add 3/8 . Now | |
| 00:38 | you're gonna notice straight off , we have the same | |
| 00:39 | denominator there , adding and subtracting fractions like this really | |
| 00:43 | easy . All we're gonna do is we deal with | |
| 00:45 | the top number the numerator here . So what we | |
| 00:48 | do is one Plus three is equal to four and | |
| 00:52 | we keep the denominator the same . We stay with | |
| 00:55 | eighths . Okay , We're getting 1/8 and we're adding | |
| 00:57 | 3/8 . Do it . So we got four eights | |
| 00:59 | altogether . Okay , the bottom number , the denominator | |
| 01:02 | stays the same . All right . This can be | |
| 01:05 | simplified a bit further . Just watch out for when | |
| 01:06 | you're doing these particular questions . Can they be simplified | |
| 01:09 | further ? And there is a number that goes into | |
| 01:11 | both the numerator and a denominator here , a common | |
| 01:15 | number that will reduce it and simplify it . So | |
| 01:17 | the number that goes into both of them and that | |
| 01:19 | is for So we divide by four . Okay . | |
| 01:22 | The top number by four and we divide the bottom | |
| 01:24 | number by four . four divided by four . We | |
| 01:27 | get the answer of one eight divided by four , | |
| 01:31 | we get the answer of two . So there's our | |
| 01:33 | answer . 1/8 plus 3/8 is able to four eights | |
| 01:37 | , which can be simplified down to a half . | |
| 01:40 | So what about one more example for this ? So | |
| 01:42 | for our next example let's do 5/7 . And we're | |
| 01:47 | gonna subtract uh to over seventh . So you're gonna | |
| 01:52 | notice first off that are denominators the same here . | |
| 01:55 | Once again . So what we can do is just | |
| 01:57 | directly take off . These are top numbers here , | |
| 02:00 | that enumerators , so five take away two is equal | |
| 02:04 | to three and the denominator stays the same . So | |
| 02:08 | this stays as a seven . We can't simplify this | |
| 02:11 | any further . So this is our answer . So | |
| 02:13 | they're pretty simple those sort of our fractions adding and | |
| 02:16 | subtracting those ones , but now we're going to have | |
| 02:18 | a look at where they're a little bit more difficult | |
| 02:20 | where we have different denominators |
Summarizer
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OVERVIEW:
Adding and Subtracting Fractions with the Same Denominator is a free educational video by tecmath.
This page not only allows students and teachers view Adding and Subtracting Fractions with the Same Denominator videos but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.
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