Topic 9 Review Test on Monday!!! FRACTIONS A fraction is one or more _______ of a whole that is divided into ________ parts. parts equal.

Topic 9 Review

Test on Monday!!!

FRACTIONS

A fraction is one or more _______ of a whole that is divided into ________ parts.

parts

equal.

Arranging on a number line Are the following closer to 0, ½, or 1?

1) 12) ½3) 04) 05) 16) 07) 1/2

.

1) 8/9 2) 0.63) 3/184) 0.15) 13/166) 0.087) 8/17

Which of the following is out of place?

1/20 1

A1/10

B 0.6

C7/10

D 0.9

B

Where should it be?

How do you find equivalent fractions? Example: 3/7

Multiply the top and bottom by the same number.

2 is the easiest.

6/14

Equivalent fractions Name 2 equivalent fractions. 3/6

2/7

7/11

Possible answers ½ 6/12

Possible answers 4/14 6/21

Possible answers 14/22 21/33

.

The MATH! When you change a mixed number into

an improper fraction, you have to be…

How to be b-B-add:

326

b…bottom times

B…BIG, then

Add…the numerator

6 x 3 = 18 + 2 = 20 Keep th

e original

denominator20

6

Converting Mixed Numbers153

+= 16

3

15333

Multiply the whole number by the denominator

Add the numerator to the result

Compute the final result

Place over the initial denominator

You try a few

8 ½

31

3

2 x 8 + 1 = 17

2

103 x 3 + 1 =

3

Now go the other wayImproper fraction to a mixed number 12

15

5

4

5 1202

10

2

2 2 5 =

How do you find the simplest form? What is the difference between a factor

and a multiple of a number???

8: 8, 16, 24, 32, 40, 48, 56.....

8: 1, 2, 4, 8

Which is which?

Factors of 8

Multiples of 8

Example:

2028

201 x 20

2 x 10

4 x 5

281 x 28

2 x 14

4 x 7

20: 1, 2, 4, 5, 10, 20

28: 1, 2, 4, 7, 14, 28

Common Factors: 1, 2, 4

GCF: 4

We will divide by 4.

÷ 4÷ 4

=57

Simplest Form

Simplest form Are these fractions equivalent? 2/5 and 6/15

Which is in simplest form?andHow do you know?

.

*Remember*

It is easy to compare fractions if they have the same denominator. All you have to do is to compare their numerators.

When the denominators are the same, simply compare the numerator.

2/8 6/8<

What do you do when the denominators are not the same? You must find a common denominator. Least Common Multiple (LCM) For example 6/8 and 4/5

5: 5, 10, 15, 20, 25, 30, 35, 40, 45.....8: 8, 16, 24, 32, 40, 48, 56.....

For example 6/8 and 4/5

5: 5, 10,15, 20, 25, 30, 35, 40, 45.....8: 8, 16, 24, 32, 40, 48, 56.....

Do you see a common multiple???

40 Use 40 as the common denominator.

6/8 x = 30/40

4/5 x = 32/40 .

Another way is to multiply denominators

5

6

3

4

What are the two denominators?

4 x 6 = 24

4 and 6

The common denominator is 24.

OR X out Teacher demonstrated

REVIEW quiz!!!

1. Which fraction names the blue shaded part of the figure below?

A.4/7B.3/7C.½D.3/8

2. How can 52/86 be written in simplest form?

A. 52/86B. 2/2C. 17/28D. 26/43

3. Which fraction represents 9 ÷ 1000?

A. 9/10B. 9/1000C. 9/100D. 1/9

4. What is 6/100 expressed as a decimal?

A. 6B. 0.6C. 0.06D. 0.006

5. In order to go outside we must have 4/5 of the teachers in agreement. Is 9/11 of the teacher’s approval enough?

A.Yes, Because 4/5 > 9/11 B.Yes, Because 4/5 < 9/11C.No, Because 4/5 > 9/11D.No, Because 4/5 < 9/11

6. Amy ran 1 ½ miles on Thursday, 2 2/5

miles on Saturday, and 1 1/10 miles on Monday. Which list has the miles Amy ran from greatest to least?

A. 2 2/5, 1 1/10, 1 ½

B. 1 1/10, 1 ½, 2 2/5

C. 2 2/5, 1 ½, 1 1/10

D. 1 1/10, 1 2/5, 1 ½

7. Which number represents S on the number line?

43

5S

A. 3/5B. 4 ½C. ½D. 4 3/5

8. Which mixed number equals 16/3?

A. 5 1/3

B. 15 1/3

C. 2 3/6

D. 6 0/3

9. What is the greatest common factor of 24 and 36?

A. 36B. 12C. 6D. 72

10.Which fraction is equivalent to 1/3?

A. 20/60B. 60/100C. 2/5D. 9/16

11. Daniel has 66/100 of a dollar in his pocket. Which is equal to 66/100?

A. 66B. 6.6C. 0.60D. 0.66

12. Which of the following equals 12/8?

A. 1B. 2.3C. 4.6D. 1.5

13. There are 7 fluffy puppies, 6 soft puppies, and 5 slick puppies. What fraction of the puppies are soft?A. 6/7B. 1/3C. 7/19D. 6/19

Answers 1. B 11. D 2. D 12. D 3. B 13. B 4. C 5. B 6. C 7. D 8. A 9. B 10. A

1. Which fraction names the blue shaded part of the figure below?

A.4/7B.3/7C.½D.3/8

2. How can 52/86 be written in simplest form?

A. 52/86B. 2/2C. 17/28D. 26/43

3. Which fraction represents 9 ÷ 1000?

A. 9/10B. 9/1000C. 9/100D. 1/9

4. What is 6/100 expressed as a decimal?

A. 6B. 0.6C. 0.06D. 0.006

5. In order to go outside we must have 4/5 of the teachers in agreement. Is 9/11 of the teacher’s approval enough?

A.Yes, Because 4/5 > 9/11 B.Yes, Because 4/5 < 9/11C.No, Because 4/5 > 9/11D.No, Because 4/5 < 9/11

6. Amy ran 1 ½ miles on Thursday, 2 2/5

miles on Saturday, and 1 1/10 miles on Monday. Which list has the miles Amy ran from greatest to least?

A. 2 2/5, 1 1/10, 1 ½

B. 1 1/10, 1 ½, 2 2/5

C. 2 2/5, 1 ½, 1 1/10

D. 1 1/10, 1 2/5, 1 ½

7. Which number represents S on the number line?

43

5S

A. 3/5B. 4 ½C. ½D. 4 3/5

8. Which mixed number equals 16/3?

A. 5 1/3

B. 15 1/3

C. 2 3/6

D. 6 0/3

9. What is the greatest common factor of 24 and 36?

A. 36B. 12C. 6D. 72

10.Which fraction is equivalent to 1/3?

A. 20/60B. 60/100C. 2/5D. 9/16

11. Daniel has 66/100 of a dollar in his pocket. Which is equal to 66/100?

A. 66B. 6.6C. 0.60D. 0.66

12. Which of the following equals 12/8?

A. 1B. 2.3C. 4.6D. 1.5

13. There are 7 fluffy puppies, 6 soft puppies, and 5 slick puppies. What fraction of the puppies are soft?A. 6/7B. 1/3C. 7/19D. 6/19

Homework!!!!! You should be studying your notes!!! Test Monday!!!