Fraction and Mixed Number Review (Add & Subtract).
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Fraction and Mixed Number Review (Add & Subtract)
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Transcript of Fraction and Mixed Number Review (Add & Subtract).
Fraction and Mixed Number Review
(Add & Subtract)
Review – Improper fraction to mixed number
Improper fraction – the numerator is larger than the denominator
3415 = 4
152 1. Divide denominator into numerator – write as whole number
2. Remainder becomes the numerator
3. Keep the same denominator
Not in notes
5 14+ = 1. Write horizontally
2. Determine common denominator
* Count by largest denominator until the smallest denominator goes into it evenly
7 no
7
14 no21 no28 yes
20 728+ =28
3. Make equivalent fraction with new denominator
•Ask yourself•What can I multiply the denominator by to get the needed denominator
x4
•Multiply the numerator by the same number
x4
•Repeat for the other fraction
x7
x7
4. Add numerator keep denominator
2728
5. Simplify if necessary
EX 1)
3 1112+ =4
x3
x1
x1
x3
9 1112+ =12
2012
53=23= 1
EX 2) EX 3)7 5
12- =10
x6
x5
x5
x6
42 2560- =60
1760
1 35+ =
Solve mixed numbers as you would simple fractions.
3. Add whole numbers
65 18
30+ =30
x5
x5
x6
x6
2330
2. Simplify if necessary
EX 4)
1
1. Add the fractions first
1
2
1 1
7 916+ =8
x2
x1
x1
14 916+ =16
23
x2
3 112- =4
x3
x1
x1
x3
9 112- =12
812
23=23= 3
EX 5) EX 6)
16
6 3 6 3
7161=
= 71610
6 3
Essential Question
How is adding fractions and adding mixed numbers similar?
Fraction and Mixed Number Review
(Add & Subtract)
Date ______________________
+ = 1. Write ____________2. Determine ______ ___________
* Count by largest denominator until the smallest denominator goes into it evenly
+ =
3. Make __________ ________ with new denominator
•Ask yourself•What can I multiply the denominator by to get the needed denominator•Multiply the numerator by the same number•Repeat for the other fraction
4. ___ numerator ____ denominator
5. _________ if necessary
EX 1)
+ =
+ =
=
=
EX 2) EX 3)
- =
- =
+ =
Solve mixed numbers as you would simple fractions.
3. ____ whole numbers+ =2. ______ if necessary
EX 4) 1. ____ the fractions first
+ =
+ =
- =
- =
=
=
EX 5) EX 6)
==
Essential Question
How is adding fractions and adding mixed numbers similar?
