8/7/2019 Adding and Subtracting Fractions REview

1/14

Parts of a Fraction

Changing Improper Fractions into Mixed Numbers and

Vice-VersaHow to Add Fractions

How to Add Mixed Numbers

How to Subtract FractionsHow to Subtract Mixed Numbers

How to Borrow When Subtracting Fractions

6th Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

2/14

T he top number of a fraction isthe numerator .

T he bottom number of a

fraction is the denominator .

3

4

6th Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

3/14

T o change a mixed number into an improper fraction getMADMultiply Add Put over Denominator

4

4 x 2 = 8

8 + 1 = 992

T o change an improper fraction into a mixed number dividethe numerator by the denominator; whatever is left over isthe new numeratorkeep the same denominator.

For Example: 11

4

11 divided 4equals 2; there

is 3 left over.

234

QUIZ

6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

4/14

Change the following into Improper Fractions. R EVIEW

1. 3

2. 5 5/8

3. 12 1/3

4. 15

Change the following into Mixed Numbers. R EVIEW

1. 40/13

2. 100/9

3. 4/3

4. 9/2

CHECK 6th Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

5/14

Change the following into Improper Fractions.

1. 3 = 7/2

2. 5 5/8 = 45/8

3. 12 1/3 = 37/3

4. 15 = 63/4

Change the following into Mixed Numbers.

1. 40/13 = 3 1/13

2. 100/9 = 11 1/9

3. 4/3 = 1 1/3

4. 9/2 = 4 6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

6/14

When adding fractions you MUST have a commondenominator!

34

15_

+

x 5 =5 =

1520

4 =

4 =x 4

20

19

20

Find the smallest numberthat both 4and 5 will go into.

This number is 20. Thenmultiply both the numeratorand denominator to get to 20.

Once you have a commondenominator, then add!

6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

7/14

6

5 1/3+

X

X

33

2

2

6

5

3/6

2/6

Find the least

commonmultiple of 3and 2. Thisnumber is 6.

You MUST

have acommon

denominatorto add

fractions!

Once you have the

common denominator,add the fractions, then

add the wholenumbers!

11 5/6

QUIZ

6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

8/14

5

6

2

3

X

X

X

X

1

1

2

2

5

6

4

6

T o subtractfractions youmust have a

commondenominator!

Find the leastcommon

multiple for 3

and 6. (In thiscase, 6) T henmultiply!

1

6

This is youranswer!

QUIZ

6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

9/14

8/7/2019 Adding and Subtracting Fractions REview

10/14

1. 3 1/5 2. 2

+ 4 + 1

7 9/20 3 5/4 = 4 1/4

3. 5 1/6 4. 1/3

+ 2 2/3 1/4

7 5/6 + 1/2

13/12 = 1 1/12

6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

11/14

5

2

To subtractfractions youmust have a

commondenominator!

Find the leastcommon

multiple of 4and 2. Thisnumber is 4.

X

X

2

2

1

1

5 2/4

2

3

ANSWER!

QUIZ

6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

12/14

5

2

X

X

2

2

1

1

5 2/4

2 3/4

FirstFind acommon

denominator.

Find the leastcommon multiple of

4 and 2. This

number is 4.

Youcannot

subtract 3from 2, so

youMUST

borrow!

4 6/4

2 3/4

2 3/4

ANSWER!

4 2/4

2 3/4

6th

Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

13/14

CHECK

1. 2. 3

- - 1

3. 4 1/5 4. 5

- 1 1/2 - 3

6th Grade HomePage

8/7/2019 Adding and Subtracting Fractions REview

14/14

1. 2. 3

- - 1

2

3. 4 1/5 4. 5

- 1 1/2 - 3

2 7/10 1

6th

Grade HomePage