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Mathematical Problem Solving & Computation Flashcards

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

Read the first 7 Mathematical Problem Solving & Computation flashcards as text

  1. What is the perimeter of an equilateral triangle with a side length of 9 inches?

    Answer: 27 inches

    An equilateral triangle has 3 equal sides, so perimeter = 3 × 9 = 27 inches.

  2. Evaluate: 3 + 6 × 2 − 4 ÷ 2.

    Answer: 13

    Using order of operations: 3 + 12 − 2 = 13.

  3. A bag contains 5 red, 3 blue, and 2 green marbles. If one marble is picked at random, what is the probability it is NOT red?

    Answer: 1/2

    There are 5 non-red marbles out of 10 total, so P(not red) = 5/10 = 1/2.

  4. Which expression is equivalent to 4x + 8?

    Answer: 4(x + 2)

    Factoring 4x + 8 by pulling out 4 gives 4(x + 2).

  5. A 6-foot ladder leans against a wall. The base is 3 feet from the wall. Using the Pythagorean theorem, how high up the wall does the ladder reach (to the nearest tenth)?

    Answer: 5.2 feet

    h² = 6² − 3² = 36 − 9 = 27, so h = √27 ≈ 5.2 feet.

  6. What is 4,800 ÷ 0.06?

    Answer: 80,000

    4,800 ÷ 0.06 = 4,800 × (100/6) = 480,000/6 = 80,000.

  7. The mean of five test scores is 82. If four of the scores are 78, 85, 90, and 74, what is the fifth score?

    Answer: 83

    Total = 82 × 5 = 410; sum of four scores = 327; fifth score = 410 − 327 = 83.