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Grade 8 Math Flashcards

7 cards from real SBAC 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 the value of 3^4 × 3^2?

    Answer: 3^6

    When multiplying powers with the same base, add the exponents: 4 + 2 = 6.

  2. Express 0.00056 in scientific notation.

    Answer: 5.6 × 10^-4

    Move the decimal 4 places right to get 5.6, giving an exponent of -4.

  3. Which number is irrational?

    Answer: √17

    √17 is not a perfect square, so its decimal never terminates or repeats.

  4. What is (2^3)^2?

    Answer: 64

    Multiply the exponents: 3 × 2 = 6, and 2^6 = 64.

  5. Between which two whole numbers does √50 lie?

    Answer: 7 and 8

    Since 7^2 = 49 and 8^2 = 64, √50 is between 7 and 8.

  6. What is the value of 5^-2?

    Answer: 1/25

    A negative exponent means the reciprocal: 5^-2 = 1/5^2 = 1/25.

  7. How many times larger is 6 × 10^8 than 3 × 10^5?

    Answer: 2,000

    Divide: (6/3) × 10^(8-5) = 2 × 10^3 = 2,000.