Topic 9
Lessons 9-8, 9-9, 9-10
A group of 36 students goes on a
school trip. Of all the students on the
trip, 18 are in third grade. What is
18/36 in simplest form?
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


A.
B.
C.
D.
1/3
4/12
8/24
1/2
A group of 36 students goes on a
school trip. Of all the students on the
trip, 18 are in third grade. What is
18/36 in simplest form?




A.
B.
C.
D.
1/3
4/12
8/24
1/2
How can you write a
fraction as a decimal?




The word name for 3/10 is three
tenths.
What would three tenths look like as a
decimal?
0.3
So, 3/10 = 0.3
A fraction such as 3/10 can be
shown by a model.
3/10
Think about money…
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

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
You know that $0.13 means 13 cents.
What fraction of a dollar does this
decimal represent?
If there are 100 cents in a dollar…
Then 13 cents is…
13/100 of a dollar
You try some
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
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0.15 = 15/100
0.23 = ?
0.31 = ?
45/100 = 0.45
63/100 = ?
71/100 = ?
You try some



0.15 = 15/100
0.23 = 23/100
0.31 = 31/100
These are all hundredths



45/100 = 0.45
63/100 = 0.63
71/100 = 0.71
Now try these
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4/10 = 0.4
6/10 = ?
2/10 = ?
0.9 = 9/10
0.7 = ?
1/10 = ?
Now try these
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
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4/10 = 0.4
6/10 = 0.6
2/10 = 0.2
These are all what?
Tenths
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0.9 = 9/10
0.7 = 7/10
1/10 = 1/10
Now add whole numbers
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
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9
3
4
6
= 9.3
23/100 = 3.23
3/10
= ?
43/100 = ?
5/10
Now add whole numbers
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
9
3
4
6
= 9.3
23/100 = 3.23
3/10
= 4.5
43/100 = 6.43
5/10
Textbook page 238-239
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
Lets look at #1-4
On your own do #12-27
Thousandths
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What would 0.454 look like as a
fraction?
Think about how you would say this
number in word form…
Four hundred fifty-four thousandths
So…
454/1000
Try these
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0.647 = 647/1000
0.342 = ?
0.876 = ?

142/1000 = 0.142

272/1000 = ?
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943/1000 = ?
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Try these

0.647 = 647/1000
0.342 = 342/1000
0.876 = 876/1000
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142/1000 = 0.142
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272/1000 = 0.272
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943/1000 = 0.943
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Textbook page 242
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#1-8 together
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Homework: page 242 #11-26
Quick check

A.
B.
C.
D.
1. What is 0.008 as
a fraction?
9/1
9/10
9/100
9/1000
2. What is 94/1000 as a
decimal?
A.
B.
C.
D.
0.904
0.094
0.0904
0.0094
3. A kitten weighed 0.128 kilograms when it was born.
What is 0.128 as a fraction?
A.
B.
C.
D.
128/1000
128/100
128/10
128/1
Number line on the board
Fractions and decimals on
a number line

Where do you think these two should
go?
0.5 and 1/10
0.4 and 7/10
1/2
0
1/10
0.4
0.5
7/10
1
Workbook pages 157-158

Or textbook pages 244-245 #1-13
Homework/class work:
 quick check 9-11
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Tomorrow Review for
TEST