Title: ADDING AND SUBTRACTING FRACTIONS
1ADDING AND SUBTRACTING FRACTIONS
- Parts of a Fraction
- Changing Improper Fractions into Mixed
Numbers and Vice-Versa - How to Add Fractions
- How to Add Mixed Numbers
- How to Subtract Fractions
- How to Subtract Mixed Numbers
- How to Borrow When Subtracting Fractions
2PARTS OF A FRACTION
The top number of a fraction is the
numerator. The bottom number of a fraction is
the denominator.
3 4
3QUIZ
MIXED NUMBERS AND IMPROPER FRACTIONS
To change a mixed number into an improper
fraction get MADMultiply Add Put over
Denominator 4 ½ 4 x 2 8 8
1 9
9 2
To change an improper fraction into a mixed
number divide the numerator by the denominator
whatever is left over is the new numeratorkeep
the same denominator. For Example 11 4
11 divided 4 equals 2 there is 3 left over.
34
2
4Quiz Changing Mixed Numbers and Improper
Fractions
- Change the following into Improper Fractions.
REVIEW - 3 ½
- 5 5/8
- 12 1/3
- 15 ¾
- Change the following into Mixed Numbers.
REVIEW - 40/13
- 100/9
- 4/3
- 4. 9/2
CHECK
5ANSWERS Changing Mixed Numbers and Improper
Fractions
- Change the following into Improper Fractions.
- 1. 3 ½ 7/2
- 5 5/8 45/8
- 12 1/3 37/3
- 15 ¾ 63/4
- Change the following into Mixed Numbers.
- 40/13 3 1/13
- 100/9 11 1/9
- 4/3 1 1/3
- 4. 9/2 4 ½
6ADDING FRACTIONS
When adding fractions you MUST have a common
denominator!
Find the smallest number that both 4and 5 will go
into. This number is 20. Then multiply both the
numerator and denominator to get to 20.
19 20
Once you have a common denominator, then add!
7QUIZ
ADDING MIXED NUMBERS
3 3
X X
6 5
3/6 2/6
2 2
11 5/6
Find the least common multiple of 3 and 2. This
number is 6.
You MUST have a common denominator to add
fractions!
Once you have the common denominator, add the
fractions, then add the whole numbers!
6th Grade HomePage
8QUIZ
SUBTRACTING FRACTIONS
5 6 2 3
5 6 4 6
Find the least common multiple for 3 and 6. (In
this case, 6) Then multiply!
1 6
This is your answer!
To subtract fractions you must have a common
denominator!
9Answers Adding Fractions
- 3 1/5 2. 2
½ - 4 ¼
1 ¾ - 5 1/6 4.
1/3 - 2 2/3
1/4 -
1/2
CHECK
Review
10QUIZ Adding Fractions
- 3 1/5 2. 2
½ - 4 ¼
1 ¾ - 7 9/20
3 5/4 4 1/4 - 5 1/6 4.
1/3 - 2 2/3
1/4 - 7 5/6
1/2 -
13/12 1 1/12
Review
11QUIZ
SUBTRACTING MIXED NUMBERS
2 2 1 1
X X
- ¼
To subtract fractions you must have a common
denominator!
Find the least common multiple of 4 and 2. This
number is 4.
ANSWER!
12SUBTRACTING FRACTIONS WHILE BORROWING
4/4
2 2 1 1
4 2/4 2 3/4
X X
FirstFind a common denominator.
2 3/4
You cannot subtract 3 from 2, so you MUST borrow!
ANSWER!
Find the least common multiple of 4 and 2. This
number is 4.
13Quiz SUBTRACTING FRACTIONS
- ½ 2.
3 ¾ - - ¼
- 1 ½ - 4 1/5 4. 5
- - 1 1/2
- 3 ¾
CHECK
Review Subtracting
Review Subtracting While Borrowing
14ANSWERS SUBTRACTING FRACTIONS
- ½ 2.
3 ¾ - - ¼
- 1 ½ - ¼
2 ¼ - 4 1/5 4. 5
- - 1 1/2
- 3 ¾ - 2 7/10
1 ¼
Review Subtracting
Review Subtracting While Borrowing