Show:
Common Denominators
Adding Fractions
Subtracting Fractions
Reasonable or nah?
100
What is a common denominator of 1/2, 3/8?
What is 8, 16, 24...?
100
Sean's drive to work is 1/2 of an hour, whereas Joe's is 1/8 of an hour. How much longer is Sean's drive than Joe's?
Sean's drive is 3/8 of an hour longer than Joe's.
100

On Saturday 3/4 of a 5th grade class went to see a new movie. If 1/2 of the class went to the afternoon session, what fraction of the class went to the evening session?

1/4 of the class went to the evening session.

100
Does the expression below have a value less than 1/2, between 1/2 and 1 or greater than 1? Justify your answer. 2 3/4 - 1 2/9
Greater than 1
200
What is a common denominator for 1/5 and 1/3?
What is 15, 30, 45...?
200
Of the houses in Ava's neighborhood, 1/8 are teal and another 1/2 are red. What fraction of the houses are either teal or red?
The fraction of the houses that are either teal or red is 5/8.
200
Julia was making a shelf. She needs 4/5 of a yard of lumber to make it. She found a piece that was 1/3 of a yard in the garage and another piece that was 2/5 of a yard in the basement. Does she have enough lumber to make the shelf?
No she does not have enough lumber. She needs 1/15 of a yard to have 4/5.
200
Does the expression below have a value less than 1/2, between 1/2 and 1 or greater than 1? Justify your answer. 5/7 - 1/3
Less than 1/2
300
What is a common denominator for 1/2, 3 1/4, 2 5/8?
What is 8, 16, 24...?
300
Blanca's chemistry textbook weighs 7/8 of a pound and her geometry textbook weighs 1/2 of a pound. How much more does the chemistry textbook weigh than the geometry textbook?
Blanca's chemistry textbook weighs 3/8 of a pound more than her geometry textbook.
300

The total length of two rugs is 10 meters. If one rug is 5 7/8 meters, what is the length of the other rug?

The length of the other rug is 4 1/8.

300
Does the expression below have a value less than 1/2, between 1/2 and 1 or greater than 1? Justify your answer. 5/6 + 4/5
Greater than 1
400
What is a common denominator for 4/5, 8/9, 10 1/2?
What is 90?
400

A recipe called for  1/12 cups chopped lettuce and  5/6 cups of diced lettuce. In total, how many cups of lettuce did the recipe call for?

The recipe calls for  11/12 cups of lettuce.

400

Tom says that 4 - 1 1/4 will be more than 3, since 4-1=3. Do you agree or disagree? Explain your thinking.

Disagree. 1 1/4 is more than one, so the difference would be less than 3. In fact, the solution would be 2 3/4.

400
Sereia is picking paint for her masterpiece. She uses 4 4/5 cups of red paint. If the container originally had 8 cups of paint, what would be a reasonable estimate of how much red paint she has left?
A reasonable estimate would be between 3 - 3 1/2 cups of paint.
500
What is a common denominator for 1/6, 2/3, 5/7?
What is 42?
500

Keith bought  1/10 pounds of salami and  1/9 pounds of burger at the store. In total, how many pounds of meat did Keith buy?

In all, Keith purchased  19/90 pounds of meat.

500

Two items in a package have a combined weight of ¼ kg. If one item weighs ⅝ kg what is the weight of the second item?

The weight of the second item is  7/8 kg

500
Juan is making a cake. He uses 4 1/5 cups of flour and 3 1/10 cups of sugar. What is a reasonable estimate for how much flour and sugar he used?
A reasonable estimate would be 7-7 1/2 cups.