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Arithmetic and Number Properties Flashcards

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

Read the first 7 Arithmetic and Number Properties flashcards as text

  1. If x^2 = 49, which of the following could be the value of x?

    Answer: 7 or -7

    Both 7 and -7 square to 49.

  2. What is 30% of 250?

    Answer: 75

    0.30 × 250 = 75.

  3. How many integers between 1 and 50 inclusive are multiples of 7?

    Answer: 7

    The multiples are 7, 14, 21, 28, 35, 42, 49 — seven values.

  4. If a number is increased by 20% and then decreased by 20%, the result is what percent of the original?

    Answer: 96%

    1.20 × 0.80 = 0.96, so the result is 96% of the original.

  5. What is the value of 2^5 × 2^3?

    Answer: 2^8

    When multiplying powers with the same base, add the exponents: 5 + 3 = 8.

  6. If the sum of three consecutive integers is 72, what is the largest of them?

    Answer: 25

    The integers are 23, 24, 25, so the largest is 25.

  7. Which of the following fractions is greatest?

    Answer: 7/10

    As decimals they are 0.667, 0.60, 0.625, 0.70, so 7/10 is greatest.