adding and subtracting fractions review
TRANSCRIPT
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8/7/2019 Adding and Subtracting Fractions REview
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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
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T he top number of a fraction isthe numerator .
T he bottom number of a
fraction is the denominator .
3
4
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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
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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
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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
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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
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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
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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
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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
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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
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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
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CHECK
1. 2. 3
- - 1
3. 4 1/5 4. 5
- 1 1/2 - 3
6th Grade HomePage
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1. 2. 3
- - 1
2
3. 4 1/5 4. 5
- 1 1/2 - 3
2 7/10 1
6th
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