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Circles
Practical Percents
Percents, Fractions, and Decimals
Ratios and Proportions
Conversions
100
What is the circumference of a circle with a radius of 12 inches?
75.36 inches (pi x d 3.14 x 24)
100
Joselin bought a pair of jeans that cost $88.50. They were on sale for 30% off! What was the final price of the jeans?
$61.95
100
Fourteen of the 70 students Janet surveyed said that buffalo tenders is their favorite entree served in the school cafe. What percent of students chose that dish?
20% (Can set up a proportion, or just divide--easier if you simplify first!!)
100
The scale factor for a model ship is 3 inches = 20 feet. If the length of the ship is 150 feet, what is the length of the model?
22.5 inches (think proportion!)
100
A bucket can hold exactly 16 pints of water. Which of the following also shows the capacity of the bucket? a. 2 gallons b. 4 gallons c. 8 gallons d. 64 gallons
A
200
What is the circumference of a circle with a diameter of 78 ft?
244.92 ft (pi x d 3.14 x 78)
200
The Palmer family left a $19 tip on a $95 bill at their favorite restaurant. What percent of the meal did they leave for tip?
20%
200
Nick got a score of 85% on his first math test and a score of 90% on his second test. His score on his third test was between the first two scores. Which ratio represents the number of problems he got correct out of the total number of problems? a. 6/8 correct b. 7/9 correct c. 7/8 correct d. 8/10 correct
c. 7/8 (with a score of 87.5%-- proportion or divide with the top dawg in the house)
200
The scale on a map is 2 cm = 50 miles. If two cities are 95 miles apart, how many centimeters apart will they appear on the map?
3.8 miles (think proportion)
200
Which bottle has the smallest capacity? a. 1 3/4 gallon bottle b. 6 quart bottle c. 13 pint bottle d. 200 fl. oz. bottle
B
300
What is the area of a circle with a radius of 5 cm?
78.5 cm squared (3.14 x 25)
300
Juan bough a soccer ball, and he received a $7.50 discount. The ball originally cost $30. What percent of discount did he receive?
25%
300
Joe's Rent-a-Car rents cars for a price of $212 for 4 days. Which proportion could be used to find x, the cost of renting a car for 10 days? A. 212/10 = x /4 B. x/212 = 4/10 c. 10/4 = 212/x D. 212/4 = x/10 (You may want to set up your own proportion, then look at choices.)
D. 212 and x both represent money, the 4 and the 10 represent # of days.
300
Mrs. Boling's recipe for tuna salad uses 4 tablespoons of mayonnaise for ever 3 pounds of tuna salad. How many tablespoons of mayonnaise does she need to make 12 pounds of tuna salad?
16 tablespoons (set up a proportion)
300
A triangle has an area of 0.5 square meter. Which is another way to describe the area of the triangle? a. 5 square centimeters b. 50 square centimeters c. 500 square centimeters d. 5,000 square centimeters
B
400
What is the area of a circle with a diameter of 12ft?
113.04 ft squared (3.14 x 36)
400
Sam saved $350 last summer cutting grass. He spent all of his money on a video game system and a jacket. If he spent $70 on the jacket, what percent of his earnings did he spend on the video game system?
80%
400
A total of 450 people attended the school play performance. If 60% of those attending were parents, how many parents attended the performance?
270
400
Leroy earns $15 for every 2 hours he spends mowing lawns for his neighbors. Last week, Lester spent 4.5 hours mowing lawns. How much money did he earn?
$33.75 (set up a proportion)
400
Which measurement is equivalent to 55 milligrams? a. 0.055 gram b. 0.55 gram c. 5, 500 grams d. 55,000 grams
a
500
What is the AREA and CIRCUMFERENCE of a circle with a diameter of 50 ft?
A = 1962.5 ft squared 3.14 x 625 (25 squared) C= 157 ft
500
The Richardson's had a big family dinner at a local restaurant. They left a 25% tip for their server, which was $60. What was the price of the meal?
$240
500
Twenty-eight of the 80 legal pads in a box are blue. What percent of the legal pads are blue?
35%
500
Hannah found that 3 out of every 5 parents in her community vote. If there are 450 parents, how many would we expect to vote?
270
500
Each of Dana's footsteps is 1 1/2 feet long. How many steps would Dana have to take to walk 1 mile?
3,520 (5,280 / 1.5)