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Grade 8 Math Flashcards

7 cards from real PARCC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Grade 8 Math flashcards as text

  1. What is 4.5 × 10^6 written in standard form?

    Answer: 4,500,000

    Moving the decimal six places right gives 4,500,000.

  2. Solve the system: y = x + 1 and y = 2x - 3.

    Answer: (4, 5)

    Setting x + 1 = 2x - 3 gives x = 4 and y = 5.

  3. A right triangle has legs 6 and 8. What is the hypotenuse?

    Answer: 10

    By the Pythagorean theorem, √(36 + 64) = √100 = 10.

  4. What is the slope of the line through (2, 3) and (6, 11)?

    Answer: 2

    Slope = (11 - 3)/(6 - 2) = 8/4 = 2.

  5. Simplify: 3^(-2).

    Answer: 1/9

    A negative exponent means the reciprocal: 3^(-2) = 1/3² = 1/9.

  6. A scatter plot shows points rising left to right. The association is:

    Answer: Positive

    Points rising as x increases indicate a positive association.

  7. What is the volume of a cylinder with radius 3 and height 5? (Use π ≈ 3.14)

    Answer: 141.3

    V = πr²h = 3.14 × 9 × 5 = 141.3.