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Arithmetic and Number Sense Flashcards

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

Read the first 6 Arithmetic and Number Sense flashcards as text

  1. What is 2³ × 2⁴?

    Answer: 2⁷

    When multiplying powers with the same base, add exponents: 2³ × 2⁴ = 2⁷.

  2. A car travels 240 miles in 4 hours. What is its average speed in miles per hour?

    Answer: 60 mph

    Average speed = total distance ÷ total time = 240 ÷ 4 = 60 mph.

  3. Which is the scientific notation for 0.00047?

    Answer: 4.7 × 10⁻⁴

    Moving the decimal 4 places right: 0.00047 = 4.7 × 10⁻⁴.

  4. If a bag contains 5 red, 3 blue, and 2 green marbles, what fraction of marbles are blue?

    Answer: 3/10

    Total marbles = 10; fraction blue = 3/10.

  5. What is the prime factorization of 60?

    Answer: 2² × 3 × 5

    60 = 2 × 30 = 2 × 2 × 15 = 4 × 15 = 2² × 3 × 5.

  6. Which expression represents the number of seconds in 2.5 hours?

    Answer: 2.5 × 60 × 60

    1 hour = 60 minutes = 3600 seconds, so 2.5 hours = 2.5 × 60 × 60 = 9000 seconds.

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