4-1 Converting Fractions to Decimals - PowerPoint PPT Presentation

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4-1 Converting Fractions to Decimals

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Title: 4-1 Converting Fractions to Decimals Author: Rita Gregory Last modified by: Rita Gregory Created Date: 10/5/2012 1:09:21 PM Document presentation format – PowerPoint PPT presentation

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Title: 4-1 Converting Fractions to Decimals

1
4-1 Converting Fractions to Decimals
2
Convert to decimals
.25
• a) 25/100 ________
• b) ½ (use long division)
• c) - 1/40 (use long division)

.5
-.025
3
Convert to decimals use your calculator
.5
• a) ½ _________
• b) 4½ _________
• TRY THIS ONE ON YOUR OWN!
• c) - 5 2/9 _________

4.5
4ltabcgt1ltabcgt2 to enter a mixed number into your
calculator.
To change a fraction to a decimal hit lt2ndgtltPRBgt
-5.222
4
Convert to fractions
15/100
• a) .15 ________
• ________
• b) .225 ________
• Enter the fraction 225 ltabcgt 1000lt gt
• ________

3/20
225/1000
9/40
5
Terminating Repeating Decimals
Where do these belong?
½ 1/3 ¼ 1/5
1/6 1/7 1/8 1/9
1/10 2/3 ¾ 2/5
5/6 2/7 5/7 3/8
2/9 7/9 3/10 3/5
6/7 5/8 4/9 8/9
• Terminating
• Repeating