| Addition | Subtraction | Comparing | Word Problems | Miscellaneous |
|---|---|---|---|---|
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24
Multiples of 8 are 8, 16, 24, 32 . . . . Multiples of 12 are 12, 24, 36, 48 . . . The smallest number that is a multiple of both denominators is 24.
To add 7/8 + 5/12, what is the lowest common denominator?
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45
Multiples of 9 are 9, 18, 27, 36, 45, 54 . . . . Multiples of 15 are 15, 30, 45, 60 . . . . 45 is the smallest number that is a multiple of both denominators.
To subtract 2/9 from 11/15, ___ is the lowest common denominator.
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3/4
Find a common denominator between both of the fractions and rewrite them as: 2/4 and 3/4 we can see that the number 3 is greater than the number 2.
What is larger, 1/2, or 3/4?
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Numerator
The top number of the fraction is called________.
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Denominators
The bottom numbers must be the same before you can add or subtract fractions.
In order to add or subtract fractions, the _____ must be the same.
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13/15
Rewrite with a common denominator of 15: 10/15 + 3/15 = 13/15
Simplify if needed. What is 1/5 + 2/3?
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5/12
Rewrite with 24 as the common denominator: take your new fractions 16/24 - 6/24 = 10/24 then you will need to simplify by finding the number that divides into each of these numbers, in this case that number is 2 which gets you your final answer of 5/12.
What is 4/6 - 2/8?
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3/7
The number 3 is smaller than the number 4.
Which is smaller, 3/7 or 4/7?
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12 3/8
Maria's new puppy weighed 3 2⁄4 pounds. After a month it had gained 8 7⁄8 pounds. What is the total weight of the puppy after a month?
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2/3
First rewrite both fractions in a simple form: 17/21 - 3/21 now subtract and you will get 14/21 which can be simplified further to 2/3 when divided by the number 7.
Simplify to lowest terms and subtract: 34/42 - 12/84
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29/30
Rewrite using 30 as the common denominator: 25/30 + 4/30 = 29/30
Simplify if necessary. What is 5/6 + 2/15?
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7/12
Rewrite with 12 as the common denominator: 9/12 - 2/12 = 7/12
Simplify if needed. What is ¾ - 1/6?
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9/11
The number 9 is greater than the number 7.
What is larger, 7/11 or 9/11?
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98 2/3 square feet
A rectangular room is 10 2/3 feet long and 9 1/4 feet wide. How much carpet would I need to purchase for this room?
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False
You could use 4, but you cannot use 6 because 6 is not a multiple of 4.
True or false? To subtract ¾ - 1/2, you could use 4 or 6 as the common denominator.
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25/36
Rewrite using 36 as the common denominator: 10/36 + 15/36 = 25/36
What is 5/18 + 5/12
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3/20
Rewrite with 20 as the common denominator. 18/20 - 15/20 = 3/20
Simplify if needed. What is 9/10 – 3/4?
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1/4
Find a common denominator between both of the fractions and rewrite them as: 4/28 and 7/28. The number 7 is greater than the number 4.
What is larger, 1/7 or 1/4?
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3/8 sugar
Tom's sugar cookie recipe calls for 3/4 of a cup of sugar. How much sugar would Tom use to make ½ of a batch of cookies?
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True
You could use either one because they are both multiples of 4 and 8. It would be faster to use 8 since it is the least common denominator. If you used 32, you would just need to do some simplifying at the end.
True or false? To add 3/8 + 1/4, you could use 8 or 32 as the common denominator.
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5/7
Rewrite using 14 as the common denominator: 4/14 + 6/14 = 10/14 then simlify to 5/7 because both the numerator and denominator can be divided by 2.
Adam used up 2/7 of his memory on his phone in January. By August, he used up 6/14 of his memory. What is the total amount of memory Adam used up on his phone?
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1/2
Rewrite with 12 as the common denominator: 10/12 - 4/12 = 6/12 then simplify by dividing both the numerator and denominator by 2 to get the final answer of 1/2.
Dave's milkshake recipe calls for 5/6 of a scoop of ice cream and Ruth's recipe calls for 1/3 of a scoop. How many more scoops of ice cream are used in Dave's recipe than in Ruth's recipe?
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Your brother ate the most pizza becuase 5/16 is greater than 1/4 and 1/8
You and everyone in your family all ordered personal pizzas. You ate 1/4 of your pizza, your sister ate 1/8 of her pizza and your brother ate 5/16 of his pizza, who ate the most pizza?
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1 7/10 flour
Isabel had 5 1⁄5 cups of flour. If she used 3 1⁄2 cups baking, how much flour did she have left?
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1/5
Simplify the fractions to 1/15 and 4/15 then subtract to get 3/15 and simplify again to get 1/5
Simplify to lowest terms and add: 4/60 + 24/90
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