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Math: Number Sense and Operations Flashcards

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

Read the first 7 Math: Number Sense and Operations flashcards as text

  1. Which of the following is an irrational number?

    Answer: √7

    √7 cannot be expressed as a ratio of integers and has a non-repeating, non-terminating decimal expansion.

  2. What is the value of 3² + 4²?

    Answer: 25

    3² = 9 and 4² = 16, so 9 + 16 = 25.

  3. A store sells apples in bags of 6 and oranges in bags of 9. What is the least number of fruit you must buy to have equal numbers of each?

    Answer: 18

    The LCM of 6 and 9 is 18, so you need 18 of each fruit.

  4. Which expression is equivalent to 2⁻³?

    Answer: 1/8

    A negative exponent means take the reciprocal: 2⁻³ = 1/2³ = 1/8.

  5. Order from least to greatest: 0.6, 2/3, 5/8

    Answer: 5/8, 0.6, 2/3

    Converting to decimals: 5/8=0.625, 0.6=0.600, 2/3≈0.667, so the order is 5/8, 0.6, 2/3.

  6. What is 15% of 240?

    Answer: 36

    15% of 240 = 0.15 × 240 = 36.

  7. Which property is illustrated by: 5 × (3 + 4) = 5 × 3 + 5 × 4?

    Answer: Distributive property

    The distributive property states that a(b + c) = ab + ac.

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  1. pesb.wa.gov — Eligibility · verified Oct 2026
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