Adding and Subtracting Fractions. Adding Fractions with common denominators.
Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3...
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Transcript of Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3...
![Page 1: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/1.jpg)
Adding and Subtracting Fractions Review
![Page 2: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/2.jpg)
When adding fractions you MUST have a common denominator!
3
4
1 5_
+
x5 =
5 =
15
20
4 =
4 =x 4
20
19
20
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.
Once you have a common denominator, then add!
6th Grade HomePage
![Page 3: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/3.jpg)
5
6
2
3
X
X
X
X
1
1
2
2
5
6
4
6
To subtract fractions you must have a
common denominator!
Find the least common
multiple for 3 and 6. (In this case, 6) Then
multiply!
1
6
This is your answer!
QUIZ
6th Grade HomePage
![Page 4: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/4.jpg)
We need a common denominator to add
these fractions.
![Page 5: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/5.jpg)
We need a common denominator to add
these fractions.
5, 10, 15, 20, 25, 30, 35, 40, 45
7, 14, 21, 28, 35, 42, 49, 56, 63
![Page 6: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/6.jpg)
We need a common denominator to add
these fractions.
7, 14, 21, 28, 35, 42, 49, 56, 63
8, 16, 24, 32, 40, 48, 56, 64, 72
![Page 7: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/7.jpg)
We need a common denominator to add
these fractions.
3, 6, 9, 12, 15, 18, 21, 24, 27
5, 10, 15, 20, 25, 30, 35, 40, 45
![Page 8: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/8.jpg)
We need a common denominator to add
these fractions.
3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33
11, 22, 33, 44, 55, 66, 77…
![Page 9: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/9.jpg)
We need a common denominator to add
these fractions.
3, 6, 9, 12, 15, 18, 21, 24, 27
6, 12, 18, 24,…
![Page 10: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/10.jpg)
We need a common denominator to
subtract one fractionfrom another.
2, 4, 6, 8, 10, 12, 14, 16, 18, 20 …
10, 20, 30…
![Page 11: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/11.jpg)
x 1
x 1
x 5
x 5
2
5 – 3 = 2
5
3
![Page 12: Adding and Subtracting Fractions Review. When adding fractions you MUST have a common denominator! 3 4 1 5_ + x 5 = 15 20 4 = x 4 20 19 20 Find the smallest.](https://reader035.fdocuments.in/reader035/viewer/2022072011/56649e0b5503460f94af2c6a/html5/thumbnails/12.jpg)
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