Mixed Numbers and Improper Fractions - By tecmath
Transcript
| 00:02 | Hello . This is a little piece designed to show | |
| 00:03 | you how to convert between mixed numbers and improper fractions | |
| 00:07 | . So here we go . The first thing you | |
| 00:10 | want to know is , Okay , what are these | |
| 00:12 | things ? Well , look at Mixed numbers . The | |
| 00:16 | mixed number is a number that contains both a whole | |
| 00:18 | number and a fraction . So here the example of | |
| 00:23 | a mixed number Is 3.5 . 3 being the whole | |
| 00:26 | number . The fraction being a half . There's a | |
| 00:30 | very close relationship between mixed numbers and improper fractions . | |
| 00:33 | As you'll see essentially they are the same number . | |
| 00:36 | They just look a little bit different . So we're | |
| 00:39 | going to change this number here to an improper fraction | |
| 00:43 | . There you go . As an improper fraction , | |
| 00:46 | 3.5 is 7/2 or seven hams . Now you can | |
| 00:50 | stop and have a look at this for a minute | |
| 00:52 | . As you can see the pictures of little pies | |
| 00:54 | up there , there's three big pies and half a | |
| 00:57 | pie . But if you cut them up , you | |
| 00:58 | also have 1234567 halves altogether . So these numbers mean | |
| 01:04 | exactly the same thing . Next we're going to look | |
| 01:07 | at well without drawing pires , how to convert between | |
| 01:10 | these things . So to show you how to do | |
| 01:12 | this , we'll look at an example . We already | |
| 01:14 | know where 3.5 as a mixed number equals an improper | |
| 01:17 | fraction of 7 , 7/2 . So the first thing | |
| 01:21 | we do with the mixed number is we get the | |
| 01:23 | whole number of which is the three times by the | |
| 01:25 | bottom number of the fraction , which is the two | |
| 01:28 | . So three times two eagle six . The next | |
| 01:31 | thing we do is we get this number and we | |
| 01:33 | add it to the top number of the fraction , | |
| 01:34 | so six plus one equals seven . And as you | |
| 01:37 | can see this is how we work out the top | |
| 01:39 | number of the improper fraction to work at . The | |
| 01:43 | bottom number is really , really easy because the bottom | |
| 01:45 | number just stays the same From the mixed number to | |
| 01:48 | the improper fraction . In this case the bottom number | |
| 01:50 | stays as a two . I'll show you another example | |
| 01:54 | , two and three quarters will change this into an | |
| 01:56 | improper fraction . So the first thing that we do | |
| 01:58 | is we times two and the four to get eight | |
| 02:02 | . And we add this to the top number of | |
| 02:04 | the fraction , which is three , so plus three | |
| 02:07 | is 11 . How do we get the bottom number | |
| 02:11 | ? Well , it's the same as the one in | |
| 02:12 | the mixed number . So the bottom number is four | |
| 02:15 | . So the two and 3/4 is a improper fraction | |
| 02:19 | is a lemonade . Before That's simple . The next | |
| 02:22 | thing we'll look at is changing back from an improper | |
| 02:24 | fraction to a mixed number . Example years . Here | |
| 02:26 | is 8/5 or eight fits very simple . Like any | |
| 02:30 | fraction . If you just read , it says eight | |
| 02:32 | divided by five , so eight divided by five equals | |
| 02:34 | one With three . As a reminder , It's three | |
| 02:38 | . You just put over the bottom number of the | |
| 02:40 | fraction , so 3/5 . The answer is one in | |
| 02:43 | 3 ft what a number stays exactly the same . | |
| 02:47 | So there you go . That's converting between mixed numbers | |
| 02:50 | and improper fractions . All right . |
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Mixed Numbers and Improper Fractions is a free educational video by tecmath.
This page not only allows students and teachers view Mixed Numbers and Improper Fractions videos but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.
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