Download - 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.

Topic 9Topic 9

Lessons 9-8, 9-9, 9-10Lessons 9-8, 9-9, 9-10

A group of 36 students goes on a A group of 36 students goes on a school trip. Of all the students on school trip. Of all the students on the trip, 18 are in third grade. the trip, 18 are in third grade. What is 18/36 in simplest form?What is 18/36 in simplest form?

A. 1/3A. 1/3 B. 4/12B. 4/12 C. 8/24C. 8/24 D. 1/2D. 1/2

PODPOD

How can you write a How can you write a fraction as a decimal?fraction as a decimal? The word name for 3/10 is three The word name for 3/10 is three

tenths. tenths. What would What would three tenthsthree tenths look like look like

as a decimal?as a decimal? 0.30.3 So, 3/10 = 0.3So, 3/10 = 0.3

A fraction such as 3/10 can A fraction such as 3/10 can be shown by a model.be shown by a model.

3/10

Think about money…Think about money…

You know that $0.13 means 13 You know that $0.13 means 13 cents. cents.

What fraction of a dollar does this What fraction of a dollar does this decimal represent?decimal represent?

If there are 100 cents in a dollar…If there are 100 cents in a dollar… Then 13 cents is…Then 13 cents is… 13/100 of a dollar13/100 of a dollar

You try someYou try some

0.15 = 15/1000.15 = 15/100 0.23 = ?0.23 = ? 0.31 = ?0.31 = ?

45/100 = 0.4545/100 = 0.45 63/100 = ?63/100 = ? 71/100 = ?71/100 = ?

You try someYou try some

0.15 = 15/1000.15 = 15/100 0.23 = 0.23 = 23/10023/100 0.31 = 0.31 = 31/10031/100

45/100 = 0.4545/100 = 0.45 63/100 = 63/100 = 0.630.63 71/100 = 71/100 = 0.710.71

These are all hundredths

Now try theseNow try these

4/10 = 0.44/10 = 0.4 6/10 = ?6/10 = ? 2/10 = ?2/10 = ?

0.9 = 9/100.9 = 9/10 0.7 = ?0.7 = ? 1/10 = ?1/10 = ?

Now try theseNow try these

4/10 = 0.44/10 = 0.4 6/10 = 6/10 = 0.60.6 2/10 = 2/10 = 0.20.2

0.9 = 9/100.9 = 9/10 0.7 = 0.7 = 7/107/10 1/10 = 1/10 = 1/101/10

These are all what?

Tenths

Now add whole Now add whole numbersnumbers 9 9 3/103/10 = 9.3 = 9.3 3 3 23/10023/100 = 3.23 = 3.23

4 4 5/10 5/10 = ?= ? 6 6 43/10043/100 = ? = ?

Now add whole Now add whole numbersnumbers 9 9 3/103/10 = 9.3 = 9.3 3 3 23/10023/100 = 3.23 = 3.23

4 4 5/10 5/10 = = 4.54.5 6 6 43/10043/100 = = 6.436.43

Textbook page 238-Textbook page 238-239239 Lets look at #1-4 Lets look at #1-4 On your own do #12-27On your own do #12-27

ThousandthsThousandths

What would 0.454 look like as a What would 0.454 look like as a fraction?fraction?

Think about how you would say Think about how you would say this number in word form…this number in word form…

Four hundred fifty-four Four hundred fifty-four thousandthsthousandths

So…So… 454/1000454/1000

Try theseTry these

0.647 = 0.647 = 647/1000647/1000 0.342 = ?0.342 = ? 0.876 = ?0.876 = ?

142/1000 142/1000 = 0.142 = 0.142 272/1000272/1000 = ? = ? 943/1000943/1000 = ? = ?

Try theseTry these

0.647 = 0.647 = 647/1000647/1000 0.342 = 0.342 = 342/1000342/1000 0.876 = 0.876 = 876/1000876/1000

142/1000 142/1000 = 0.142 = 0.142 272/1000272/1000 = = 0.2720.272 943/1000943/1000 = = 0.9430.943

Textbook page 242Textbook page 242

#1-8 together#1-8 together

Homework: page 242 #11-26Homework: page 242 #11-26

Quick checkQuick check

1. What is 0.008 1. What is 0.008 as a fraction?as a fraction?

A.A. 9/19/1B.B. 9/109/10C.C. 9/1009/100D.D. 9/10009/1000

PODPOD

2. What is 94/1000 as a decimal?

A. 0.904B. 0.094C. 0.0904D. 0.0094

3. A kitten weighed 0.128 kilograms when it was born.What is 0.128 as a fraction?

A. 128/1000B. 128/100C. 128/10D. 128/1

Number line on the Number line on the boardboard

Fractions and decimals Fractions and decimals on a number lineon a number line Where do you think these two Where do you think these two

should go?should go?

0 1

1/2

0.4 and 7/10

0.4 7/10

0.5 and 1/10

0.51/10

Workbook pages 157-Workbook pages 157-158158 Or textbook pages 244-245 #1-Or textbook pages 244-245 #1-

1313 Homework/class work: Homework/class work: quick check 9-11quick check 9-11

Tomorrow Review for Tomorrow Review for TESTTEST