Percent problems
Ratios
Adding/subtracting rational numbers
Unit Rates
Proportional Relationships
100
What is 3.5% as a decimal?
What is 0.035
100
In geometry class, the girl to boy ratio is 9 to 4. If there are 45 girls, how many boys are there?
What is 20 boys
100
What is -5 - (-8)?
What is 3
100
If an employee makes 27 calls in 9 hours, how many calls do they make per hour?
What is 3 calls per hour?
100
What are the two elements that tell me if a graph is proportional?
1) Line has to be straight
2) Line has to go through origin or point 0,0
200
What is 25% of $125? Answer with units.
What is $30
200
The ratio of the number of girls to the number of boys in a chess club is 3 to 2. There are 14 boys in the chess club, What is the number of girls in the chess club?
What is 21 girls.
200
At sunset, a thermometer had a reading of 4°F. During the night, the temperature decreased 15°F. After the decrease, what is the total number of degrees that the temperature must change for the thermometer to read 0°F ?
What is 11°
200
The cost of renting a cotton candy machine for 4 hours is $72. What is the cost per hour?
$18 per hour
200
Another name for constant of proportionality is..
What is unit rate
300
Brenda decreased her running speed from 8 minutes to 6.5 minutes per mile. What is the percent change in her speed? (Hint: Difference divided by original speed as a percent)
What is 18.75%
300
For every 3 chocolate chip cookies that Angel bakes, he bakes 2 oatmeal raisin cookies. Is he bakes 80 oatmeal raisin cookies, how many chocolate chip cookies did he bake?
What is 120 chocolate chip cookies
300
A cook removes a package of food from a freezer and begins to defrost the package. The initial temperature of the package of food is -15°F. At noon, the temperature of the package of food has increased to 35°F. What is the total change in temperature, in degrees Fahrenheit, for the package of food?
What is 50°F
300
You took a trip to the mountains and traveled 486 miles. It took you 9 hours to get there. What is your miles per hour?
What is 54 miles per hour
300
Which machine is a proportional relationship and what is its constant of proportionality?
What is machine Q and a constant of proportionality of 6
400
What is the final price of a car that costs $35,000 with a 15% discount?
What is $29,750?
400
The ratio of cats to dogs that are in the shelter is 5 to 3. If there are 48 dogs, how many are cats?
80 cats
400
What is 10 - 17 + 5 - 2
What is -4
400
Josh can walk 4/5 of a mile in 1/6 of an hour. What is his average speed in miles per hour?
24/5 or 5 4/5 miles per hour
400
Is this a proportional relationship? If yes, what is the constant of proportionality? If no, why not?
No because y/x is not constant
500
Leah goes to the store to buy a shirt. The shirt costs $15. If she has a 20% off discount and then tax is 9%, what is the total cost of the shirt? (Hint: Find total cost with discount then tax)
What is $13.08
500
For every 4 books that Kenisha reads, she reads 3 magazines. If she read 21 magazines, how many total publications did she read?
What is 49
500
What is -5/8 + 1 1/2
What is 7/8
500
A bus traveled 2/7 of the distance between two cities in 5/6 of an hour. At this rate, how long will it take them reach their destination? (Hint: Find hour per distance!)
What is 35/12 or 2 11/12 hours
500
Lincoln bought 3 bottles of energy drink for $9. Write an equation relating the total cost y to the number of energy drinks bought x.
y = 3x