1 / 9

Fractions 1

Fractions 1. Click mouse. What does. mean?. What is a fraction?. 7. _____. 10. Seven out of ten. 0.7. Seven tenths. 70%. Seven over ten. Seven divided by ten. Click mouse. A fraction shows how one part of something compares to the whole. There are two parts to a fraction.

mmathew
Download Presentation

Fractions 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Fractions 1 Click mouse

  2. What does mean? What is a fraction? 7 _____ 10 Seven out of ten 0.7 Seven tenths 70% Seven over ten Seven divided by ten Click mouse

  3. A fraction shows how one part of something compares to the whole. There are two parts to a fraction. Numerator Denominator Click mouse to continue Click mouse

  4. Proper fraction Types of fraction ¾ ½ 3/10 5 8 ¼ Improper fraction 4/3 5/4 8/5 11/7 or “top heavy” 2 3 5 Mixed fraction ½ ¼ ¾ Click mouse

  5. Changing a mixed number to a top heavy fraction The first example will use the fraction 2 1 (two and a third) and change this into a top heavy fraction: 3 1 This is 2 whole ones 2 … and one third of a whole. 3 Q. How many thirds in a whole? One whole A. Three Q. How many thirds in two whole ones? 2 whole ones A. Six Q. How many thirds altogether? … and one third A. Seven 7 How is this written? So you have “seven thirds”. 3 Click mouse

  6. Second example How about 34 ? 5 “Three and four fifths” Q. How many fifths in a whole? A. Five Q. How many fifths in three whole ones? A. Fifteen Then add on the other “four fifths” Q. Total number of fifths? 19 5 A. Nineteen. Click mouse

  7. There must be a quicker way!! Now 34 5 … and there is!! 3 x 5 = 15 Going back to the two previous examples: 19 5 15 + 4 = 19 1 2 3 Q. What is it that you actually find? A. The total number of thirds! Now try 23 4 2 x 4 = 8 + 3 = 11 This can be done as follows: = 11 4 1 This tells us how many thirds there are in two whole ones! 2 2 3 = 6 x 3 Eleven fourths or eleven quarters. 7 Now add the other third to get seven thirds! 3 Click mouse

  8. Questions Change each of the following mixed fractions to top heavy fractions: • 1 1 • 4 5 4 23 7 1 x 4 = 4 4 + 1 = 5 4. 32 7 3 x 7 = 21 21 + 2 = 23 5. 5 1 31 6 2.23 5 13 5 5 x 6 = 30 30 + 1 = 31 2 x 5 = 10 10 + 3 = 13 6 14 3 3.4 2 3 4 x 3 = 12 12 + 2 = 14 Click mouse

  9. Changing a top heavy fraction to a mixed number This is basically the reverse of what you have just been doing: Example: Change 7 into a mixed number. 5 This means seven fifths …… What about? 8 3 = 22 3 Q. How many fifths in one whole? A. Five So you have one whole one and two fifths left over. = 11 4 5 4 Alternatively you can say “how many times does five divide into seven?” – the answer is one remainder two. 9 2 = 41 2 12 5 End Click mouse

More Related