Quizdom Posttest Sample Questions

1. Marki went to Angle E and bought a pair of pants that normally sold for $58.00, but today were discounted 40%. How much money did she save?

$22.60

$23.20

$36.00

$18.20

Marki saved $23.20. To find the amount of money saved, we need to calculate 40% of the original price. 40% of $58.00 is $23.20.

Explanation

Marki saved $23.20. To find the amount of money saved, we need to calculate 40% of the original price. 40% of $58.00 is $23.20.

2. Solve this expression 3 x 4 + 6 x 2 - 3 x 5 (the x is used to represent multiplication in this problem - it is not used as a variable)

285

-18

15

9

The given expression is solved using the order of operations, which states that multiplication and division should be performed before addition and subtraction. First, we perform the multiplications: 3 x 4 = 12 and 6 x 2 = 12. Then, we perform the subtractions: 12 - 15 = -3. Finally, we perform the addition: -3 + 9 = 6. Therefore, the correct answer is 6, not 9.

Explanation

The given expression is solved using the order of operations, which states that multiplication and division should be performed before addition and subtraction. First, we perform the multiplications: 3 x 4 = 12 and 6 x 2 = 12. Then, we perform the subtractions: 12 - 15 = -3. Finally, we perform the addition: -3 + 9 = 6. Therefore, the correct answer is 6, not 9.

3. Cat, the burglar hunter, drove 400 miles in 6 hours to catch her prey. Assuming she maintained constant speed, what was her driving rate?

70 mi/hr

56 1/3 mi/hr

66 2/3 mi/hr

67 mi/hr

Cat drove 400 miles in 6 hours, so her driving rate can be calculated by dividing the total distance by the total time. 400 miles divided by 6 hours equals 66 2/3 miles per hour.

Explanation

Cat drove 400 miles in 6 hours, so her driving rate can be calculated by dividing the total distance by the total time. 400 miles divided by 6 hours equals 66 2/3 miles per hour.

4. Ted described a set of numbers to a friend over the phone. He used these descriptions: drive me crazy because there's no pattern, does not repeat or terminate. Which set of numbers is he describing?

Natural #'s

Whole #'s

Irrational #'s

Rational #'s

The set of numbers that Ted is describing is the set of irrational numbers. Irrational numbers are numbers that cannot be expressed as a fraction or a ratio of two integers. They do not have a repeating or terminating decimal representation and do not follow a specific pattern. Examples of irrational numbers include √2, π, and e.

Explanation

The set of numbers that Ted is describing is the set of irrational numbers. Irrational numbers are numbers that cannot be expressed as a fraction or a ratio of two integers. They do not have a repeating or terminating decimal representation and do not follow a specific pattern. Examples of irrational numbers include √2, π, and e.

5. If the lateral surface of a cylinder were unrolled, what shape would be seen?

Circle

Rectangle

Ellipse

Trapezoid

If the lateral surface of a cylinder were unrolled, it would form a rectangle. This is because the lateral surface of a cylinder is a curved surface that wraps around the cylinder's curved shape. When this surface is unrolled, it becomes a flat, straight shape, which is a rectangle.

Explanation

If the lateral surface of a cylinder were unrolled, it would form a rectangle. This is because the lateral surface of a cylinder is a curved surface that wraps around the cylinder's curved shape. When this surface is unrolled, it becomes a flat, straight shape, which is a rectangle.

6. Brian is seeking donations for a charitable organization. He receives $25, $60, $30, $55, $15, $60, and $35. What is the mean of the donations?

$70

$35

$40

$60

The mean of a set of numbers is found by adding up all the numbers and then dividing by the total number of values. In this case, the sum of the donations is $25 + $60 + $30 + $55 + $15 + $60 + $35 = $280. Since there are 7 donations, the mean is $280 divided by 7, which equals $40.

Explanation

The mean of a set of numbers is found by adding up all the numbers and then dividing by the total number of values. In this case, the sum of the donations is $25 + $60 + $30 + $55 + $15 + $60 + $35 = $280. Since there are 7 donations, the mean is $280 divided by 7, which equals $40.

7. The square root of 223 is between:

14 and 15

11 and 12

18 and 19

15 and 16

To find the square root of 223, we can estimate it by considering the perfect squares around it. The perfect squares closest to 223 are 196 (14^2) and 225 (15^2). Since 223 is closer to 225 than 196, the square root of 223 must be between 14 and 15.

Explanation

To find the square root of 223, we can estimate it by considering the perfect squares around it. The perfect squares closest to 223 are 196 (14^2) and 225 (15^2). Since 223 is closer to 225 than 196, the square root of 223 must be between 14 and 15.

8. How many different ways can you arrange the letters in the word MATH?

8 ways

12 ways

16 ways

24 ways

The word "MATH" has 4 letters. To find the number of different ways we can arrange these letters, we can use the formula for permutations, which is n! (n factorial). In this case, n = 4, so 4! = 4 x 3 x 2 x 1 = 24. Therefore, there are 24 different ways to arrange the letters in the word "MATH".

Explanation

The word "MATH" has 4 letters. To find the number of different ways we can arrange these letters, we can use the formula for permutations, which is n! (n factorial). In this case, n = 4, so 4! = 4 x 3 x 2 x 1 = 24. Therefore, there are 24 different ways to arrange the letters in the word "MATH".

9. The volume of a cube is 8 cubic feet. How much is that in cubic inches?

1,728 cubic inches

512 cubic inches

64 cubic inches

13,824 cubic inches

The volume of a cube is calculated by multiplying the length of one side by itself three times. In this case, if the volume of the cube is 8 cubic feet, we need to convert this measurement to cubic inches. Since there are 12 inches in a foot, we can calculate the volume in cubic inches by multiplying 8 by 12 cubed (12 x 12 x 12), which equals 13,824 cubic inches.

Explanation

The volume of a cube is calculated by multiplying the length of one side by itself three times. In this case, if the volume of the cube is 8 cubic feet, we need to convert this measurement to cubic inches. Since there are 12 inches in a foot, we can calculate the volume in cubic inches by multiplying 8 by 12 cubed (12 x 12 x 12), which equals 13,824 cubic inches.