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Number Sense and Operations Flashcards

7 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 7 Number Sense and Operations flashcards as text

  1. What is 3/4 + 5/6?

    Answer: 19/12

    Finding a common denominator of 12: 9/12 + 10/12 = 19/12.

  2. Which of the following is equivalent to 0.375?

    Answer: 3/8

    0.375 = 375/1000 = 3/8 when reduced to lowest terms.

  3. What is 15% of 80?

    Answer: 12

    15% of 80 = 0.15 × 80 = 12.

  4. If a recipe calls for 2 cups of flour for every 3 cups of sugar, how many cups of flour are needed for 9 cups of sugar?

    Answer: 6

    Set up the proportion 2/3 = x/9; solving gives x = 6.

  5. What is the value of 3 + 4 × 2 − 1?

    Answer: 10

    Following order of operations, multiply first: 4 × 2 = 8, then 3 + 8 − 1 = 10.

  6. What is the product of −6 and −4?

    Answer: 24

    A negative times a negative equals a positive: (−6)(−4) = 24.

  7. Which of the following numbers is prime?

    Answer: 17

    17 has no factors other than 1 and itself, making it prime.