Lesson 4.5 - Fractions and Decimals

8/14/2019 Lesson 4.5 - Fractions and Decimals

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Five-Minute Check (over Lesson 44)

Main Idea and Vocabulary

Example 1:Use Mental Math

Example 2:Use Mental MathExample 3:Use Division

Example 4:Use Division

Example 5:Write Fractions as Repeating Decimals

Example 6:Real-World Example: Use a Power of 10
http://glencoe.mcgraw-hill.com/sites/0078740460/


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terminating decimals

repeating decimals

bar notation

Write fractions as terminating or repeatingdecimals and write decimals as fractions.


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Use Mental Math

10

10

Answer: So, .

Think


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Use Mental Math

Write as a sum.

Answer:

Add.


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1. A

2. B

3. C

4. D

A B C D

0% 0%0%0%

C. 9.2


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Use Division

Method 1 Use paper and pencil.

Divide 1 by 8.


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Use Division

Method 2 Use a calculator.

Answer:

1 8 0.125ENTER=


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1. A

2. B

3. C

4. D

A B C D

0% 0%0%0%

D. 0.4


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Use Division


4

0

100

Answer: So, = 0.04

Divide 1 by 25.


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Write Fractions as Repeating Decimals


Divide 1 by 11.


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Write Fractions as Repeating Decimals

Method 2 Use a calculator.

Answer:

1 11 0.090909ENTER=


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1. A

2. B

3. C

4. D

A B C D

0% 0%0%0%

A.

B.

C.

D.


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Use a Power of 10

CEREAL Jorge read that 0.72 of his favorite cerealwas whole-grain wheat. Find what fraction of hiscereal, in simplest form, is whole-grain wheat.

Answer: So, of the cereal is whole-grain wheat.

The final digit, 2, is in the

hundredths place.

Simplify.


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1. A

2. B3. C

4. D

A B C D

0% 0%0%0%

EXERCISE Jeanette ran 0.86 of a mile. What fractionof a mile did she run?

A. mi

B.

C.

D.

mi

mi

mi


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End of the Lesson

Homework Pg 199-200,

# 14-36all, 49-57all


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Five-Minute Check (over Lesson 44)

Image Bank

Math Tools

Percents

Prime Factorization
http://../Glencoe%20Teacher%20Stuff/Course%202/Class%20Power%20Points/09Math_G7/09Math_G7_Image%20Bank.ppthttp://../Glencoe%20Teacher%20Stuff/Course%202/Class%20Power%20Points/09Math_G7/Tools/ToolsInterface.exehttp://../Glencoe%20Teacher%20Stuff/Course%202/Class%20Power%20Points/09Math_G7/M2_06/M2_06_dev_100.exehttp://www.glencoe.com/sec/math/brainpops/00112691/00112691.htmlhttp://glencoe.mcgraw-hill.com/sites/0078740460/http://www.glencoe.com/sec/math/brainpops/00112691/00112691.htmlhttp://../Glencoe%20Teacher%20Stuff/Course%202/Class%20Power%20Points/09Math_G7/M2_06/M2_06_dev_100.exehttp://../Glencoe%20Teacher%20Stuff/Course%202/Class%20Power%20Points/09Math_G7/Tools/ToolsInterface.exehttp://../Glencoe%20Teacher%20Stuff/Course%202/Class%20Power%20Points/09Math_G7/09Math_G7_Image%20Bank.ppt


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1. A

2. B3. C

4. D

A B C D

0% 0%0%0%

(over Lesson 4-4)

A.

B.

C.

D.


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1. A

2. B3. C

4. D

A B C D

0% 0%0%0%

(over Lesson 4-4)

A.

B.

C.

D.

Write in simplest form.


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1. A

2. B3. C

4. D

A B C D

0% 0%0%0%

(over Lesson 4-4)

A.

B.

C. 11

D. 21


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1. A

2. B3. C

4. D

A B C D

0% 0%0%0%

(over Lesson 4-4)

A.

B.

C.

D.

Write two fractions that are equivalent to


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1. A

2. B3. C

4. D

A B C D

0% 0%0%0%

(over Lesson 4-4)

A.

B.

C.

D.

Write two fractions that are equivalent to


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1. A

2. B3. C

4. D

A B C D

0% 0%0%0%

(over Lesson 4-4)

Which fraction is notequivalent to the other

fractions?

A.

B.

C.

D.


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Documents

Lesson 4.5 - Fractions and Decimals