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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 the least common multiple (LCM) of 4 and 6?

    Answer: 12

    The smallest number divisible by both 4 and 6 is 12.

  2. What is the greatest common factor (GCF) of 18 and 24?

    Answer: 6

    The factors of 18 are 1, 2, 3, 6, 9, 18 and factors of 24 include 1, 2, 3, 4, 6, 8, 12, 24; the GCF is 6.

  3. Which of the following fractions is the largest?

    Answer: 2/3

    Converting to decimals: 2/3 ≈ 0.667, 3/5 = 0.600, 5/8 = 0.625, 7/12 ≈ 0.583; 2/3 is largest.

  4. A car travels 150 miles in 3 hours. What is its average speed in miles per hour?

    Answer: 50 mph

    Average speed = distance ÷ time = 150 ÷ 3 = 50 mph.

  5. What is 2 1/3 + 1 2/3?

    Answer: 4

    2 1/3 + 1 2/3 = 3 + 3/3 = 3 + 1 = 4.

  6. What is the next number in the pattern: 2, 6, 18, 54, ___?

    Answer: 162

    Each term is multiplied by 3; 54 × 3 = 162.

  7. If 5 books cost $35, how much do 8 books cost at the same rate?

    Answer: $56

    Each book costs $35 ÷ 5 = $7; 8 × $7 = $56.