Common Denominators
The Common Denominators of ½ & 3/8.
What is 8, 16, 24, ….
Sean’s drive to work is ½ of an hour, whereas Joe’s is 1/8 of an hour. How much longer is Sean’s drive than Joe’s.
What is Sean's drive is 3/8 hour longer.
3 1/3 – 1 1/2?
What is 1 5/6
A recipe is called for 1 1/12 cups chopped lettuce and 1 5/6 cups of diced lettuce. In total, how many cups of lettuce did the recipe call for?
What is 2 11/12 cups of lettuce.
Does the expression below have a value less than 1/2, between ½ and 1 or greater than 1? Justify your answer.
2¾ - 1 2/9
What is Greater than 1.
The Common Denominators of 1/5 & 1/3.
What is 15, 30, 45...
Of the houses in Ava’s neighborhood, 1/8 are teal and another ½ are red. What fraction of the houses are either teal or red?
What is the fraction of the houses that’s teal or red is 5/8.
Felicia lives 1 1/5 miles from school and 9/10 miles from the soccer field. How much further away is the school than the soccer field?
What is 3/10 miles.
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?
What is the length of the other rug is 4 1/8.
Does the expression below have a value less than 1/2, between ½ and 1 or greater than 1? Justify your answer.
5/7 – 1/3
What is Less than ½
The Common Denominators of ½, 3 ¼, 2 5/8.
What is 8, 16, 24...
Blanca’s chemistry textbook weighs 7/8 of a pound and her geometry textbook weighs ½ of a pound. How much weight does the chemistry textbook and the geometry textbook weigh? Make answer a mixed number.
What is the chemistry book and the geometry book weigh 1 3/8 pound.
Stephen Curry ate 2/6 of the sweet potato pie and Lebron James at 1/5 of the sweet potato pie. How much of the sweet potato pie is left?
What is 14/30 of the sweet potato pie.
Keith bought 1 1/2 pounds of salami and 1 1/6 pounds of burger at the store. In total, how many pounds of meat did Keith buy?
What is Keith purchased 1 2/3 pounds?
Does the expression below have a value less than ½, between ½ and 1 or greater than 1? Justify your answer.
5/6 + 4/5
What is Greater than 1.
The Common Denominators of 4/5, 8/9, 10 ½.
What is 90.
On Saturday 3/4 of a 5th grade class went to see a new movie. If ½ of the class went to the afternoon session, what fraction of the class went to the evening session?
What is ¼ of the class went to the evening session.
Kado spent 1 2/3 hours painting a fence. Then he spent 4/5 of an hour walking his dog. How much longer did he spend painting than walking his dog?
What is 13/15 of an hour.
Two items in a package have a combined weight of 6 ¼kg. If one item weighs 2 5/8 kg what is the weight of the second item?
What is the weight of the second item is 3 7/8 kg.
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?
What is Reasonable estimate between 3 – 3 ½ cups of paint.
The Common Denominators of 1/6, 2/3, 5/7.
What is 42.
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? Explain.
What is no she does not have enough lumber. She needs 1/15 of a yard to have 4/5.
Emil’s backpack weighs 6 3/8 pounds. He removes a book that weighs ¾ pound. The he removes a book that weighs ½ pound. How much does Emil’s backpack weigh now?
What is 5 1/8 pounds.
Tom says that 4 – 1 ¼ will be more than 3, since 4-1=3. Do you agree or disagree? Explain your thinking.
What is I Disagree. 1 ¼ is more than one, so the difference would be less than 3. In fact, the solution would be 2 ¾.
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?
What is Reasonable estimate between 7- 7 ½ cups of flour.