Convert It!
Mix It Up!
Tax, Tips, Etc.
Are We There Yet?
Trees and Lakes!
Oh, My!
100
Jeff surveyed 40 families in his neighborhood. He found out that 32 of the families had children. What percentage of the families Jeff surveyed had children?
80%
100
A landscaper is buying grass seed in bulk for his business. The grass seed costs $294.00 for 150 pounds. Which is closest to the cost of 400 pounds of the grass seed?
$784
100
Oscar's car uses 5 gallons of gasoline to travel a distance of 100 miles. If 1 gallon of gasoline costs $2.50, what is the greatest number of miles Oscar can drive using $50 worth of gasoline?
400 miles
100
Paul has a rectangular photograph that is 5 inches long and 3 inches wide. He wants to enlarge the photograph proportionally so that the new photograph will be 2 feet in length. What is the new width?
1 1/5 feet or 1.2 feet
100
Triangle SRT has sides of 2, 3, and 4 cm. Triangle SRT is similar to Triangle UVW. If Triangle UVW was enlarged by a scale factor of 1.5. What is the perimeter of UVW?
13.5 cm
200
A jellyfish's weight is 95% water. What fraction of the weight of a jellyfish is water?
19/20
200
A gold ring marked "18 karat" is 18 parts pure gold and 6 parts another metal. What percent of a ring marked "18 karat" is pure gold?
75%
200
Candace put $2200 into a savings account that pays a simple interest annual rate of 3.4%. How much money will her account be worth in 5 1/2 years?
$2611.40
200
Samantha needs to know the distance between Spring Valley and Riverdale. She is using a map with the scale 0.5 inch represents 30 miles. If the distance between the cities on Samantha's map is 6 inches, what is the actual distance in miles between the cities?
360 miles
200
Kathie wants to calculate the height of a tree using similar triangles. Her friend Carol is 5 feet tall. She measured the lengths of the shadows for both Carol and the tree. Carol's shadow was 6 feet long and the tree's shadow was 18 feet long. How tall is the tree?
15 feet tall
300
Steven answered 21 out of 25 questions correctly on his homework assignment. What percent of his homework questions did he answer correctly?
84%
300
A company discovered that 3 out of every 40 MP3 players they manufactured were defective. At this rate, how many MP3 players would the company expect to be defective out of a total of 3600?
270 would be expected to be defective.
300
Jan bought a pair of jeans for $89.95 and was charged 8.5% sales tax. How much money will be deducted from her checking account?
$97.60
300
A map of the United States has a scale of 3cm=900 miles. You measure from Denver to Atlanta and get 4 cm. What is the actual distance from Denver to Atlanta?
1200 miles
300
At the same time that Laura's shadow is 6 feet long, a flag pole's shadow is 15 feet long. If Laura is actually 5 feet tall, how tall is the flag pole? If Laura is 5 feet tall, which is closest to the height of the light pole?
12.5 feet
400
Simon and his friends completed a project. • Jim did 2/5 of the project. • Carol did 3/10 of the project. • Blanca did 10% of the project. • Simon did 20% of the project. What percent of the project was done by Carol and Simon?
50%
400
An 8-ounce container has 6 ounces of coffee and 2 ounces of milk. A 20-ounce container has the same ratio of coffee to milk. How many ounces of milk are in the 20-ounce container?
5 ounces
400
Your family spent $75.00 at LongHorn. If the restaurant applied 9.5% sales tax and you decided to give the server an 18% tip, how much did you pay for the meal?
$95.63
400
A model train is made using a scale of 1 inch = 8 feet. How long is the model if the real train is 60 feet long?
7 1/2 inches long
400
Anne folded a piece of paper into the shape of a triangle. The lengths in centimeters of the triangle's sides are 4, 7, and 9 cm. Which triangle is similar to Anne's: a triangle with sides of 5, 8, and 10 cm or with sides of 8, 14, and 18 cm? Explain your reasoning.
The triangle with sides of 8, 14, and 18 cm is similar to the original triangle with sides of 4, 7, and 9 cm. The second triangle has been increased by a scale factor of 2. (NOTE: You NEVER add or subtract to get new dimensions of similar figures!)
500
Xavier works as a website designer. He received a bonus of $9632 for finishing a website ahead of schedule. He paid $2408 in taxes on his bonus. Which is closest to the percent of Xavier's bonus that he paid in taxes?
25%
500
A salt solution was made by mixing 4 pounds of salt with 10 gallons of water. At this rate, how many pounds of salt are required for 15 gallons of water?
6 pounds
500
RedBox increased their video rental price from $3.25 to $3.75. What is the percent of increase?
15%
500
On a map, the distance from Lelia's house to the soccer field is 9.2 cm. Using the scale of 1 cm= 125 meters, what is the actual distance from her house to the field?
1150 meters
500
Triangle ABC has sides lengths of 4, 6, and 8 cm. Triangle ABC is similar to triangle DEF. If the corresponding side lengths are in order, find the missing side of DEF when the first two lengths are 6 and 9 cm.
12 cm
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