# Math Trivia: Exam Practice Questions On Triangle!

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Quizzes Created: 206 | Total Attempts: 107,222
Questions: 16 | Attempts: 386

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• 1.

### If the diameter of a circle is 4", what is its radius?

• A.

1"

• B.

3"

• C.

1/2"

• D.

2"

D. 2"
Explanation
The diameter of a circle is twice the length of its radius. Therefore, if the diameter of the circle is 4 inches, the radius would be half of that, which is 2 inches.

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• 2.

### How many sides does a decagon have?

• A.

Five

• B.

10

• C.

100

• D.

12

B. 10
Explanation
A decagon is a polygon with 10 sides. In this question, the correct answer is 10, which accurately represents the number of sides in a decagon.

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• 3.

### What is the total area in square feet of a room that measures 6' by 12'?

• A.

72

• B.

90

• C.

36

• D.

42

A. 72
Explanation
The total area of a rectangular room can be found by multiplying its length by its width. In this case, the room measures 6 feet by 12 feet. So, the total area would be 6 feet multiplied by 12 feet, which equals 72 square feet.

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• 4.

### If a pencil costs \$1.00 and every tenth pencil is free, how much would you pay for 25 pencils?

• A.

26

• B.

25

• C.

20

• D.

23

D. 23
Explanation
If every tenth pencil is free, then for 25 pencils, one pencil will be free. So, you would pay for 24 pencils. Since each pencil costs \$1.00, the total cost would be \$24. Therefore, the correct answer is 24.

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• 5.

### In a grid of 80 squares, how many squares should be shaded for 25% of the grid to be shaded?

• A.

20

• B.

40

• C.

80

• D.

10

A. 20
Explanation
To find the number of squares that should be shaded for 25% of the grid to be shaded, we need to calculate 25% of 80. To do this, we multiply 80 by 0.25, which gives us 20. Therefore, 20 squares should be shaded for 25% of the grid to be shaded.

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• 6.

### If a recipe calls for 20 quarts of milk, how many two-gallon jugs of milk should I purchase?

• A.

Nine

• B.

12

• C.

Six

• D.

Three

D. Three
Explanation
To find the number of two-gallon jugs of milk needed, we need to convert the 20 quarts of milk into gallons. Since there are 4 quarts in a gallon, 20 quarts is equal to 5 gallons. Each two-gallon jug can hold 2 gallons, so we divide 5 gallons by 2 gallons per jug. The result is 2.5, but since we can't purchase a fraction of a jug, we round up to the nearest whole number. Therefore, we need to purchase three two-gallon jugs of milk.

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• 7.

### How much fencing would be needed to enclose a rectangular back yard that is 20 feet by 10 feet?

• A.

200 Feet

• B.

30 Feet

• C.

60 Feet

• D.

100 Feet

C. 60 Feet
Explanation
To calculate the amount of fencing needed to enclose a rectangular backyard, we need to find the perimeter. The perimeter of a rectangle is calculated by adding the lengths of all four sides. In this case, the length is 20 feet and the width is 10 feet. So, the perimeter would be 2 times the length plus 2 times the width, which is (2 * 20) + (2 * 10) = 60 feet. Therefore, 60 feet of fencing would be needed to enclose the backyard.

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• 8.

### If a runner starts a race at 11:15 and runs for 34 minutes, at what time does he finish?

• A.

11:39

• B.

11:49

• C.

11:34

• D.

11:59

B. 11:49
Explanation
The runner starts the race at 11:15 and runs for 34 minutes, so we need to add 34 minutes to the starting time. Adding 30 minutes to 11:15 gives us 11:45, and adding an additional 4 minutes gives us 11:49. Therefore, the runner finishes the race at 11:49.

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• 9.

### If you pay five cents per minute for long distance calls, how much will 90 minutes of calls cost?

• A.

1.4

• B.

9.5

• C.

7

• D.

4.5

D. 4.5
Explanation
If you pay five cents per minute for long distance calls, the cost of 90 minutes of calls can be calculated by multiplying the cost per minute (5 cents) by the number of minutes (90). This can be done as follows: 5 cents/minute * 90 minutes = 450 cents. Since there are 100 cents in a dollar, the cost of 90 minutes of calls is \$4.50. Therefore, the correct answer is 4.5.

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• 10.

### If Liz wants to buy a car costing \$8,000 and she must pay 20% down, how much is her down payment?

• A.

800

• B.

160

• C.

80

• D.

1600

D. 1600
Explanation
Liz wants to buy a car costing \$8,000 and she must pay 20% down. To calculate the down payment, we need to find 20% of \$8,000. 20% of \$8,000 is equal to (20/100) * \$8,000 = \$1,600. Therefore, Liz's down payment is \$1,600.

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• 11.

### If Chris got 22, 26, and 24 points in his last three games, what is his average of points per game?

• A.

26

• B.

24

• C.

72

• D.

20

B. 24
Explanation
Chris got 22, 26, and 24 points in his last three games. To find the average, we add up the points and divide by the number of games played. Adding 22, 26, and 24 gives us a total of 72. Since Chris played 3 games, we divide 72 by 3 to find the average. Therefore, his average points per game is 24.

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• 12.

### If Dave's car has traveled 300 miles on 15 gallons of gas, what is the mileage?

• A.

100 MPG

• B.

50 MPG

• C.

10 MPG

• D.

20 MPG

D. 20 MPG
Explanation
The mileage of Dave's car is 20 MPG because it has traveled 300 miles on 15 gallons of gas. To calculate the mileage, we divide the total distance traveled (300 miles) by the amount of gas used (15 gallons). The result is 20 miles per gallon.

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• 13.

### If a recipe calls for 3/4 cup of flour but you are doubling it, how much flour do you need?

• A.

1 1/2 Cups

• B.

2/3 Cup

• C.

3 Cups

• D.

3/8 Cup

A. 1 1/2 Cups
Explanation
If a recipe calls for 3/4 cup of flour and you are doubling it, you need to multiply 3/4 by 2. This can be done by multiplying the numerators (3) and the denominators (4) separately. Multiplying 3 by 2 gives 6, and multiplying 4 by 2 gives 8. Therefore, the amount of flour needed when doubling the recipe is 6/8 cup. Simplifying this fraction gives 3/4 cup, which is equal to 1 1/2 cups.

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• 14.

### If a tree has grown an average of five feet per year for 11 years, how tall is it?

• A.

80 Feet

• B.

55 Feet

• C.

40 Feet

• D.

36 Feet

B. 55 Feet
Explanation
If a tree has grown an average of five feet per year for 11 years, the total height of the tree would be 55 feet. This can be calculated by multiplying the average growth rate of 5 feet per year by the number of years, which is 11. Therefore, the tree would be 55 feet tall.

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• 15.

### If you buy groceries 8 times a month and spend about \$60 each time, how much is that per month?

• A.

575

• B.

680

• C.

480

• D.

800

C. 480
Explanation
If you buy groceries 8 times a month and spend about \$60 each time, you can calculate the total amount spent per month by multiplying the number of times you buy groceries (8) by the amount spent each time (\$60). Therefore, the total amount spent per month would be 8 * \$60 = \$480.

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• 16.

### If a bottle has 64 ounces of juice and eight people share it, how much juice does each one get?

• A.

Five Ounces

• B.

Eight Ounces

• C.

26 Ounces

• D.

17 Ounces

B. Eight Ounces
Explanation
Each person gets 8 ounces of juice because there are 64 ounces of juice divided among 8 people.

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• Current Version
• Mar 19, 2023
Quiz Edited by
ProProfs Editorial Team
• May 14, 2015
Quiz Created by
DanielCarig

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