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Mathematics - Number Sense Flashcards

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

Read the first 6 Mathematics - Number Sense flashcards as text

  1. Simplify: (−4) × (−3) × 2

    Answer: 24

    (−4) × (−3) = 12, and 12 × 2 = 24; two negatives multiply to a positive.

  2. A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of randomly selecting a blue marble?

    Answer: 3/10

    There are 3 blue marbles out of 10 total, so the probability is 3/10.

  3. What is 2.5 × 10³ written in standard notation?

    Answer: 2,500

    2.5 × 10³ = 2.5 × 1,000 = 2,500.

  4. Which set of numbers is ordered from greatest to least?

    Answer: −1, −4, −7, −10

    On a number line, −1 > −4 > −7 > −10 because numbers closer to zero are greater.

  5. A student earns $12.50 per hour. How much does she earn for working 6.5 hours?

    Answer: $81.25

    12.50 × 6.5 = $81.25.

  6. What is the GCF (greatest common factor) of 36 and 48?

    Answer: 12

    The largest number that divides both 36 and 48 evenly is 12.