EDI NS 1.2 Revised
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Today we will find decimal equivalents for common fractions equivalent= alike fraction=part of a whole decimal=a number less than 1 Concep t
Transcript of EDI NS 1.2 Revised
Today we will find decimal equivalents for common
fractions
equivalent= alikefraction=part of a wholedecimal=a number less
than 1 Concept
*Place over 100
Soun
ds li
ke fr
actio
n*D
ivideD
ivid
e
Move decimal two places to the left
Move the decimal two places to the right and add %APK
Div
ide
Equivalent means to show the same number in a different
way.
Equivalent
CD
710 = 0.7
How do we convert a fraction to a decimal?
Divide numerator by denominator
CD
_710
numerator
denominator==
CD
_7
10
CD
710
Divide
½ = .50 = 50%=
¼ = .25 = 25% =
Write 9 25
as a decimal
Write 9 25
as a decimal
Write 9 25
as a decimal
Write 9 25
as a decimal
FractionA fraction is a number (numerator and
denominator) that shows part of a whole set.An example:
CD
Numerator
Denominator
Decimal
A number less than 1. Examples:
0.500.250.330.75
Where 1 = 1.00
Common fraction and their decimal equivalents
Fraction Decimal Percent1 1.0 100%1/3 .333 33.3%1/4 .25 25%1/5 .2 20%1/8 .125 12.5%1/10 .1 10%1/2 .5 50%2/3 .666 66.6%3/4 .75 75%2/5 .4 40%5/8 .624 62.5%9/10 .9 90%
Another way to find decimals equivalents from fractions
How to convert fraction to decimals
What number do you have to multiply the denominator to get 100?
X =
X =
You get 20/100 and you know that this is .20
.20
Why is understanding how to find decimal equivalents for common fractions
important?• You will know how to convert fractions to
decimals.
• It will be tested on future CST exams!
• What are other reasons why it is important to know how to find decimal equivalents for common fractions
IMP
Write a fraction and a decimal for each shaded part.
=
8 6.007
-5640-40
5
00
.
Write a fraction and a decimal for each shaded part.
=
0.41
Find the decimal for the fraction.
=
2 8.004
-80 0-0 0
0
00
.=
1. Ask yourself, “How much of the pie graph is shaded?”
2. Write the shaded part as a fraction3. Divide4. Make sure your decimal is in the right place.
Write a fraction for the shaded part of the pie graph.
Write a fraction and a decimal for each shaded part.
=
4 2.005
-2 00 0-0 0
0
00
.
1. Ask yourself, “How much of the pie graph is shaded?”
2. Write the shaded part as a fraction3. Divide 4. Make sure your decimal is in the right place.
Let’s review how to find decimal equivalents for common fractions
• What is a decimal?• What is a fraction?• What are number
equivalents?
• How do you writeas a decimal?
“out of a hundred”
%
Percent
