8th Grade Math Practice Quiz

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Quizzes Created: 3 | Total Attempts: 22,879
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  • 1/10 Questions

    What is (+8)x(-13)?

    • (+5)
    • (-100)
    • (-104)
    • (-900)
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About This Quiz


If the end-of-year exams are almost here, one way to get rid of the butterflies in your tummy is to ensure that you take an adequate practice test on what you have learned so far. To help you with this, we have prepared a series of questions from the junior high curriculum of mathematics. Give it a try, and keep practicing. If you find this math quiz interesting, do not forget to share it with other people out there who love math as much as you do. All the best to you.

8th Grade Math Practice Quiz - Quiz

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  • 2. 

    What is 45% of $360.00?

    • $45.00

    • $162.00

    • $125.00

    • $350.00

    Correct Answer
    A. $162.00
    Explanation
    To find 45% of $360.00, you can multiply $360.00 by 0.45. This will give you the amount of $162.00.

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  • 3. 

    Which of the following is not a type of graph?

    • Pictograph

    • Bar graph

    • Line graph

    • External graph

    • Double bar graph

    Correct Answer
    A. External graph
    Explanation
    The options given are all types of graphs except for "external graph." This suggests that "external graph" is not a recognized type of graph.

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  • 4. 

    What is the surface area of a cylinder?

    • LxW

    • 2x(3.14x r)+(3.14x d x h)

    • Bxh/2

    • S2

    • LxWxH

    Correct Answer
    A. 2x(3.14x r)+(3.14x d x h)
    Explanation
    The formula for the surface area of a cylinder is 2Ï€r^2 + 2Ï€rh. In the given answer, 2(3.14r) represents the area of the two circular bases of the cylinder, and (3.14dh) represents the area of the curved surface. Therefore, the given answer correctly calculates the surface area of a cylinder.

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  • 5. 

    What is 3/4 divided by 3/8? (The lowest terms)

    • 3/16

    • 2

    • 4/2

    • 2/1

    Correct Answer
    A. 2
    Explanation
    When dividing fractions, you can multiply the first fraction by the reciprocal of the second fraction. In this case, 3/4 divided by 3/8 is equal to (3/4) * (8/3). Simplifying this expression gives us (3 * 8) / (4 * 3), which is equal to 24/12. Further simplifying by dividing both the numerator and denominator by 12, we get 2/1. Therefore, the answer is 2.

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  • 6. 

    What is the equivalent ratio to the unit rate of $6.00/14 mL?

    • 6:14

    • 1:7

    • 3:7

    • 7:6

    Correct Answer
    A. 3:7
    Explanation
    The equivalent ratio to the unit rate of $6.00/14 mL is 3:7. This means that for every 3 dollars, there are 7 milliliters.

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  • 7. 

    What is y equal to using:  x/5+(-13)=y when x= 8

    • Y= -11.4

    • Y=12

    • Y=11.4

    • Y=8

    Correct Answer
    A. Y= -11.4
    Explanation
    By substituting x=8 into the equation x/5 + (-13) = y, we can solve for y. Plugging in the value, we get 8/5 + (-13) = y. Simplifying this expression, we have 1.6 - 13 = y, which gives us -11.4 = y. Therefore, y is equal to -11.4.

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  • 8. 

    Find the following value using opposite operations. r/10+3= 13

    • R=1000

    • R=10

    • R=100

    • R=13

    Correct Answer
    A. R=100
    Explanation
    To find the value of r, we need to reverse the operations in the equation. The equation states that r divided by 10, and then added by 3 is equal to 13. To reverse this, we subtract 3 from 13, which gives us 10. Then, we multiply 10 by 10 to get the value of r, which is 100. Hence, the correct answer is r=100.

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  • 9. 

    What is the length of side "c" if the sides of "a" is 20m and side "b" is 35m? (Hint: use a2+b2, then find the square root)

    • 2098m

    • 55m

    • 1625m

    • 40.3m

    Correct Answer
    A. 40.3m
  • 10. 

    What is the volume of a prism?

    • BxH

    • LxW

    • LxWxH

    • AxP

    Correct Answer
    A. BxH
    Explanation
    The volume of a prism is calculated by multiplying the base area (B) of the prism by its height (H). This is because the volume of a prism represents the amount of space it occupies in three dimensions. By multiplying the base area by the height, we are essentially finding the volume of the prism by multiplying the area of the base by the distance it extends in the vertical direction.

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  • Current Version
  • Aug 02, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 01, 2010
    Quiz Created by
    Pamplamouse

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