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Adding Fractions with Unlike Denominators
Subtracting fractions with Unlike Denominators
Least Common Denominator
Miscellaneous
Random Review
100
1/4 + 2/3 = Answer in simplest form.
3/12 + 8/12 = 11/12
100
4/5 - 1/3 = Answer in simplest form.
12/15 - 5/15 = 7/15
100
1/2 & 3/5
Least Common Denominator = 10
100
If the denominators are the same for two fractions, would you have to multiply one by the other
No, only multiply if denominators are unlike
100
5 x 0.89
4.45
200
True or False. 4/9 + 1/6 = 10/18
False. 8/18 + 3/18 = 11/18
200
True or False. 4/3 - 2/7 = 1 & 1/21
True. 28/21 - 6/21 = 22/21 = 1 & 1/21
200
5/12 & 2/9
Least Common Denominator = 36
200
The first thing you do when you are adding or subtracting fractions with unlike denominators.
Make the denominators the same.
200
Five identical shirts cost a total of $152. How much does one shirt cost?
$152 / 5 = $30.40
300
11/12 + 7/15 = Answer in simplest form.
55/60 + 28/60 = 83/60 = 1 & 23/60
300
11/12 - 7/15 = Answer in simplest form.
55/60 - 28/60 = 27/60 = 9/20
300
1/6 & 4/21
Least Common Denominator = 42
300
Add and subtract 3/4 & 1/5
15/20 & 4/20 Addition = 19/20 Subtraction= 11/20
300
5.62 / 0.4 =
14.05
400
1/2 + 1/3 + 1/4 = Answer in simplest form.
6/12 + 4/12 + 3/12 = 13/12 = 1 & 1/12
400
6/7 - 1/2 - 1/28 = Answer in simplest form.
24/28 - 14/28 - 1/28 = 9/28
400
9/10 & 5/6 & 2/3
Least Common Denominator = 30
400
TWO ways you can get two fractions with unlike denominators to have the same denominator.
1. Multiply the two denominators by one another 2. Least Common Denominator
400
Place parenthesis, braces, and brackets to make the equation true. 7 + 4 x 3 - 4 = 29
[(7 + 4) x 3] - 4 = 29
500
1/4 + 3/7 + 2/3 = Answer in simplest form.
21/84 + 36/84 + 56/84 = 113/84 = 1 & 29/84
500
9/10 - 1/4 - 1/3 = Answer in simplest form.
54/60 - 15/60 - 20/60 = 19/60
500
11/14 & 17/42 & 2/3
Least Common Denominator = 42
500
The last step in the process of adding and subtracting fractions.
Simplify.
500
Place parenthesis, braces, and brackets to make the equation true. 10 + 1 + 3 - 7 x 2 = 14
(10 + 1 + 3 - 7) x 2 = 14