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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. Which is closest to the value of π?

    Answer: 22/7

    22/7 ≈ 3.142, the closest common approximation of π ≈ 3.14159.

  2. Solve: -3(x - 2) = 9.

    Answer: x = -1

    Dividing by -3 gives x - 2 = -3, so x = -1.

  3. Two figures are similar with scale factor 1:2. A side of 5 on the small figure corresponds to:

    Answer: 10

    Multiplying 5 by the scale factor 2 gives 10.

  4. What is the distance between points (1, 2) and (4, 6)?

    Answer: 5

    Distance = √((4-1)² + (6-2)²) = √(9+16) = √25 = 5.

  5. A graph that is a straight line through the origin represents:

    Answer: A proportional relationship

    A line through the origin shows a proportional (y = kx) relationship.

  6. Simplify: (4 × 10^3)(2 × 10^2).

    Answer: 8 × 10^5

    Multiply 4 × 2 = 8 and add exponents 3 + 2 = 5, giving 8 × 10^5.

  7. In a two-way table, what describes data showing 80% of athletes prefer sports drinks?

    Answer: A relative frequency

    A percentage within a category is a relative frequency.