Upload
kaydence-rojas
View
53
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Comparing & Ordering Fractions. Key Terms. Greater Than أكبر من. Fraction كسر. Ascending تصاعدي. Less Than أقل من. Descending تنازلي. Equal ﻳﺴﺎوي. Numerator اﻟﺒﺴﻂ. Least Common Denominator (LCD) مشترك اصغرقاسم. - PowerPoint PPT Presentation
Citation preview
Key TermsKey Terms
Fraction كسر
Ascending تصاعدي
Numerator البسط
Descending تنازلي
Denominator قاسم
Greater Than أكبرمنLess Than أقل منEqual يساوي
Least Common Denominator (LCD)اصغرقاسم مشترك
To compare (قارن) fractions you can draw a picture or
use the “Butterfly” method.
4
3
6
5<
Draw (رسم ) a pictureUse >, <, or =.
Use >, <, or =.
5
33
29 10<
<
“Butterfly” method
Use >, <, or =.
10
34
112 10>
>
“Butterfly” method
To order (النظام) fractions you can draw a picture or use the Least Common Denominator
(LCD).
4
3
6
5
Draw a picture
Ascending Order: least to greatest
2
1
4
32
1
6
5
Put the fractions in Ascending Order.
, ,
One way to compare or order fractions is to
express them with the same denominator.
Any common denominator could be used. But the
Least Common Denominator (LCD)
makes the computation easier.
The Least Common Denominator is the
Least Common Multiple of the denominators.
LCD = LCM
Use LCD
List the fractions in Descending Order (from greatest to least).
3
2,
9
5,
12
7,
6
1
Find the LCD
Step 1: Find the LCM of the denominators
3
2,
9
5,
12
7,
6
1
6: 6, 12, 18, 24, 30, 36, 42, 48…
LCD = 36
Find the LCD:
12: 12, 24, 36, 48 …
9: 9, 18, 27, 36, 45 …
3: 3, 6, 9, 12, 15, 18, 21, 24,
27, 30, 33, 36 …
Step 2: Write equivalent fractions.
6
1
36x 6
x 6 6 12
736x 3
x 3 21
9
536x 4
x 4 20 3
236x 12
x 1224
G LStep 3: Compare the numerators
6
1
36 6
12
73621
9
53620
3
23624
Descending Order In order from greatest to
least
6
1,
9
5,
12
7,
3
2
Now you’re
ready!!