How to Multiply Fractions - By tecmath
Transcript
| 00:01 | Hello there . This video is about multiplying fractions . | |
| 00:05 | Okay . How do multiple factions is very very easy | |
| 00:07 | . The first one I'm going to go to is | |
| 00:10 | this nice simple one half times a half which is | |
| 00:13 | I've written down here equals a quarter . Another way | |
| 00:16 | of thinking about this a half times a half there's | |
| 00:18 | a half of a half . A half of a | |
| 00:19 | half is quarter . Okay , another way of writing | |
| 00:22 | of maths is by writing times . Well , you | |
| 00:26 | might think about this is half of a half a | |
| 00:28 | dollar . Half a dollar . 50 cents . Half | |
| 00:30 | of that is 25 cents . So half of a | |
| 00:33 | half a dollar . This is one quarter of a | |
| 00:36 | dollar . Okay , anyway , doing this math wise | |
| 00:41 | . Okay , what you generally do is you get | |
| 00:43 | to top numbers and you multiply them by each other | |
| 00:46 | one times one equals 12 bottom numbers . Two times | |
| 00:49 | two . It was four . So we go through | |
| 00:53 | a couple of other examples of this . Okay , | |
| 00:56 | what about this one ? Two thirds times 56 Again | |
| 01:00 | to top numbers , you multiply one other . So | |
| 01:02 | two times five is 10 . The bottom numbers three | |
| 01:05 | times 6 equals 18 . So the answer to this | |
| 01:08 | is 10/18 . This can be simplified even further if | |
| 01:12 | you divide the top and the bottom number by two | |
| 01:14 | and you get the answer of 5-9 . Another example | |
| 01:18 | of this is to say where we have a mixed | |
| 01:21 | number Like 2 1⁄2 times three . First thing you | |
| 01:25 | can do with the mixed number is you have to | |
| 01:26 | change it into an improper fraction . So 2.5 becomes | |
| 01:30 | 5/2 . You have to change three into an improper | |
| 01:33 | fraction . This case three becomes 3/1 . So then | |
| 01:38 | you have something like 5/2 times 3/1 , which gives | |
| 01:42 | you the answer of 15 over to . So 15/2 | |
| 01:47 | becomes He would simplify 7.5 . Okay , that's all | |
| 01:52 | there . Is there so something everything up ? We're | |
| 01:56 | multiplying fractions . You should do the following . The | |
| 01:58 | first thing is you should change any mixed numbers into | |
| 02:01 | improper fractions . Then what you should do is you | |
| 02:04 | should multiply the top number of the first fraction by | |
| 02:07 | the top number of the second fraction . Should multiply | |
| 02:09 | the bottom number of the first fraction by the bottom | |
| 02:11 | number of the second fraction . And then you simplify | |
| 02:14 | your answer anyway , that's all for now . |
Summarizer
DESCRIPTION:
OVERVIEW:
How to Multiply Fractions is a free educational video by tecmath.
This page not only allows students and teachers view How to Multiply Fractions videos but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.
GRADES:
STANDARDS:
