Presentation is loading. Please wait.

Presentation is loading. Please wait.

Comparing & Ordering Fractions.

Similar presentations


Presentation on theme: "Comparing & Ordering Fractions."— Presentation transcript:

1 Comparing & Ordering Fractions

2 To compare fractions you can draw a picture or use the “Butterfly” method.

3 Draw a picture Use >, <, or =. <

4 Use >, <, or =. “Butterfly” method 9 < 10 <

5 “Butterfly” method Use >, <, or =. 12 10 > >

6 To order fractions you can draw a picture or use the Least Common Denominator (LCD).

7 Order : least to greatest Draw a picture

8 Order the fractions from least to greatest.
, ,

9 One way to compare or order fractions is to express them with the same denominator.

10 Any common denominator could be used
Any common denominator could be used. But the Least Common Denominator (LCD) makes the computation easier.

11 The Least Common Denominator is the Least Common Multiple of the denominators.
LCD = LCM

12 List the fractions in order from greatest to least.
Use LCD List the fractions in order from greatest to least.

13 Step 1: Find the LCM of the denominators
Use LCD Step 1: Find the LCM of the denominators

14 6 21 36 36 20 24 36 36 Step 2: Write equivalent fractions. x 6 x 3 x 6

15 Step 3: Compare the numerators
G L 21 6 36 36 24 20 36 36

16 In order from greatest to least:
Use LCD In order from greatest to least:

17

18 Find the LCD: 6, 12, 18, 24, 30, 36, 42, 48… 12, 24, 36, 48 … 9, 18, 27, 36, 45 … 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36 … LCD = 36


Download ppt "Comparing & Ordering Fractions."

Similar presentations


Ads by Google