5-1 Decimals as Fractions - PowerPoint PPT Presentation

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5-1 Decimals as Fractions

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Decimals as Fractions 2 What fraction of the rectangle is green? What decimal part of the rectangle is green? .6 They sound alike!!! To write a decimal as a fraction ... – PowerPoint PPT presentation

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Title: 5-1 Decimals as Fractions


1
5-1 Decimals as Fractions
2
Two Questions
2
ponder
3
What fraction of the rectangle is green?
They sound alike!!!
What decimal part of the rectangle is green?
.6
4
To write a decimal as a fraction, write the
fraction as you would say the decimal
Hundredths
Ten-thousandths
tenths
0.12345
Hundred-thousandths
Thousandths
5
Say the decimal.Write it as a fraction
Notice.when you change a decimal to a fraction
the denominator is always 10, 100, 1000 (powers
of ten!)
  • .5
  • .65
  • .22
  • .2
  • .225

6
Is that all there is?
Of Course Not
You have to simplify the fraction if possible
7
Write .6 as a fraction
BUT
SO
8
What about fractions to decimals?
You can write a fraction as a decimal by dividing
the numerator by the denominator..the fraction
symbol means division!
9
(No Transcript)
10
One more thing
When you divide, REMEMBER, add zeros to finish
your division.
AND
2 THINGS CAN HAPPEN
11
The division problem ends
A Terminating decimal
The division problem goes on forever.Repeating
decimal
12
Repeating Decimals
A single digit might repeat. .3333. Or a group
of digits might repeat .275275275.
13
Show repeating decimals by placing a line over
the digit or group of digits that repeats
.33333. Becomes .3 And .275275.becomes .275
14
Remember
Whole numbers stay the same!
15
Homework
Page 212 in your textbook. Problems 14-38 Start
now!
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