Adding and Subtracting Fractions
What is 1/4 + 1/4?
1/2
What is 1/2 × 1/2?
1/4
What is 1/2 ÷ 1/4?
2
If a car travels 60 km in 1 hour, what is its speed?
60km/h
What is the ratio of 3 apples to 5 oranges?
3:5
Subtract 3/8 from 7/8.
4/8 or 1/2
Multiply 3/4 by 1/3.
3/12 or 1/4
Divide 3/4 by 1/2.
6/4 or 1 1/2
A printer prints 30 pages in 5 minutes. What is its rate per minute?
6 pages/min
Simplify the ratio 6:9.
2:3
Add 2/3 and 1/6
5/6
What is 2/5 × 3/4?
6/20 or 3/10
What is 2/3 ÷ 1/3
6/3 or 2
A bike travels 24 km in 2 hours. What is its speed?
12km/h
If the ratio of boys to girls is 4:5 and there are 20 girls, how many boys are there?
16 boys
What is 5/6 - 1/3?
3/6 or 1/2
Multiply 5/6 by 3/5.
15/30 or 1/2
Divide 5/6 by 1/3
15/6 or 2 1/2
A factory produces 120 widgets in 3 hours. What is its production rate?
40 widgits/hr
A recipe calls for a ratio of 2 cups of flour to 3 cups of sugar. How much flour is needed for 9 cups of sugar?
6 cups
Add 3/4 and 2/5
23/20 or 1 3/20
What is 7/8 × 4/7
28/56 or 1/2
What is 7/8 ÷ 1/4?
28/8 or 3 1/2
A train travels 300 km in 4 hours. What is its speed?
75km/h
The ratio of cats to dogs is 3:7. If there are 28 dogs, how many cats are there?
12 cats