Adding/Subtracting Fractions and Mixed Numbers: Common Denominators
100
Find the least common denominator of 2/3 and 1/6.
What is 6; 4/6 and 1/6
100
Look at the chart. How much greater is the 100-calorie portion of orange juice than the 100-calorie portion of peaches?
What is 3/10
100
6 2/5 + 4 3/5 ?
What is 11
100
Tape cartridges play at only one speed, 3 3/4 ips. Cassettes also play at only one speed, 1 7/8 ips. What is the difference in these speeds?
What is 1 7/8 ips
100
4/8 + 1/8 ?
What is 5/8
200
Find the least common denominator of 1/3 and 2/5.
What is 15; 5/15 and 6/15
200
You are making cookies and the recipe calls for 4/5 cup of baking soda and 3/4 of sugar. How much baking soda and sugar is that?
What is 1 11/20
200
The highway department was building a road. The first day they leveled 16 1/2 miles of roadbed. However, they messed up 8 4/9 miles of it. How many miles did they have to redo?
What is 8 1/18
200
You are making a batch of cookies and the recipe calls for
2 3/4 cup of flour. However, you put in 3 1/2 cups instead. How much flour do you need to take out?
What is 3/4 cup
200
The Boosters Club of Southwestern School volunteered to paint four sections of the bleachers surrounding the football field. The first week the members painted 2 1/5 sections blue and 1 2/5 sections white. How many of the sections did they paint the first week?
What is 3 3/5
300
Find the least common denominator of 4/5 and 5/6.
What is 30; 24/30 and 25/30
300
13/16 + 1/2 ?
What is 1 5/16
300
7 1/4 + 2 1/6 ?
What is 9 5/12
300
You are making a double batch of cookies with your mom and the recipe calls for 4 1/2 cups of flour. You put in 6 1/3 cups of flour on accident because you got distracted by your little sister. How much flour needs to be taken out?
What is 1 5/6 cups
300
42 5/10 + 28 3/10 ?
What is 70 4/5
400
Find the least common denominator of 3/20 and 1/3.
What is 60; 9/60 and 20/60
400
Look at the chart. How much greater is the fraction of a cup of corn than the fraction of a cup of lima beans?
What is 1/12
400
The highway department was building a road. The first day they leveled 2 4/5 miles of roadbed. The second day they leveled 2 7/10 miles of roadbed. What was the total number of miles of roadbed leveled in the first two days.
What is 5 1/2 miles of roadbed were leveled
400
You are making pancakes and to feed 10 people it calls for 8 1/2 cups of the pancake mix. By mistake, you put in 10 1/4 cups. How much pancake mix do you need to take out?
What is 1 3/4 cup
400
The Kirby School volunteered to paint four sections of seats in the local soccer stadium. The first week the club members painted 1 1/5 sections red and 1 3/5 sections blue. How many of the sections did they paint the first week.
What is 2 4/5
500
Find the least common denominator of 5/12, 4/5, and 5/6.
What is 60; 25/60, 48/60, and 50/60
500
Look at the chart. The class made a fruit dessert by mixing 100-calorie portions of canned apricots and canned peaches. How many cups of fruit were in the dessert?
What is 1 1/10
500
19 4/5 + 26 1/10 + 35 1/4 ?
What is 81 3/20
500
You are hosting a party and have to make Chex mix. You need 22 1/2 cups of pretzels. By mistake, you put in 28 1/4 cups of pretzels. How many cups of pretzels do you need to take out?
What is 5 3/4 cups
500
The club members used 42 3/4 cans of blue paint and
35 1/4 cans of red paint to paint the stadium. How much more blue paint than red did they use?