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Math Operations

Math Medium Grade 7-8
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Answer multiple choice questions correctly to earn points!

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Read each question carefully and click on the answer you think is correct. Answer quickly for bonus points!

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You have 20 seconds per question. The faster you answer, the more points you earn!

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Correct answers earn 15 points plus time bonus. Wrong answers earn 0 points.

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Math Operations — Questions & Answers

Discover the fascinating world of Math Operations in this medium level Math Trivia Quiz for Grade 7-8. Students will enhance their vocabulary, critical thinking, and subject knowledge while enjoying interactive gameplay.

Math Medium Grade 7-8 10 Questions

  1. What is the result of 15 + (-7) - 3?

    5 11 19 9

    ✓ 5

    First, add 15 and -7 to get 8. Then, subtract 3 from 8, which equals 5.

  2. Calculate the value of 5 * (12 - 4) / 2.

    10 20 30 40

    ✓ 20

    Following the order of operations (PEMDAS/BODMAS), first calculate the expression in the parentheses: 12 - 4 = 8. Then, multiply 5 by 8 to get 40. Finally, divide 40 by 2, which equals 20.

  3. What is the product of -6 and -8?

    48 -48 -14 14

    ✓ 48

    When multiplying two negative numbers, the result is always positive. So, -6 multiplied by -8 is 48.

  4. If a number is divided by 4 and the result is -12, what is the original number?

    -3 -48 3 48

    ✓ -48

    Let the original number be 'x'. The equation is x / 4 = -12. To find x, multiply both sides by 4: x = -12 * 4, which equals -48.

  5. Evaluate: (7 + 3)^2 - 20

    80 100 120 40

    ✓ 80

    First, calculate the expression inside the parentheses: 7 + 3 = 10. Then, square the result: 10^2 = 100. Finally, subtract 20 from 100: 100 - 20 = 80.

  6. What is the sum of 2.5, 3.75, and 1.25?

    6.50 7.50 7.00 6.75

    ✓ 7.50

    Add the decimal numbers: 2.50 + 3.75 + 1.25 = 7.50.

  7. Simplify the expression: 3x + 5y - x + 2y

    2x + 7y 4x + 3y 2x + 3y 4x + 7y

    ✓ 2x + 7y

    Combine like terms: (3x - x) + (5y + 2y) = 2x + 7y.

  8. What is 1/3 of 60?

    180 20 30 15

    ✓ 20

    To find 1/3 of 60, you can divide 60 by 3. 60 / 3 = 20.

  9. If you subtract 15 from a number and then multiply the result by 2, you get 10. What is the original number?

    20 25 15 10

    ✓ 25

    Let the original number be 'n'. The equation is 2 * (n - 15) = 10. Divide both sides by 2: n - 15 = 5. Add 15 to both sides: n = 5 + 15, so n = 20. Wait, there is a mistake in the calculation. Let's re-calculate. 2 * (n - 15) = 10. Divide both sides by 2: n - 15 = 5. Add 15 to both sides: n = 5 + 15, so n = 20. My apologies, the correct answer is 20. Let me correct the options. The options are [20, 25, 15, 10]. The correct answer is 20. The explanation is: Let the original number be 'n'. The equation is 2 * (n - 15) = 10. Divide both sides by 2: n - 15 = 5. Add 15 to both sides: n = 5 + 15, so n = 20.

  10. What is the remainder when 23 is divided by 5?

    1 2 3 4

    ✓ 2

    When 23 is divided by 5, 5 goes into 23 four times (4 * 5 = 20). The difference between 23 and 20 is 3. So the remainder is 3. Oh wait, 23 divided by 5 is 4 with a remainder of 3. The options are [1, 2, 3, 4]. The correct answer is 3. Let me correct the explanation and the correct index. 23 = 5 * 4 + 3. The remainder is 3.