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Mathematics Flashcards

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

Read the first 7 Mathematics flashcards as text

  1. A rectangle has a length of 12 cm and a width of 7 cm. What is its perimeter?

    Answer: 38 cm

    Perimeter = 2 × (length + width) = 2 × (12 + 7) = 2 × 19 = 38 cm.

  2. Which of the following fractions is closest to 1/2?

    Answer: 5/9

    5/9 ≈ 0.556, which is closest to 0.5 compared to 3/8=0.375, 2/5=0.4, and 4/7≈0.571.

  3. A bag contains 4 red, 3 blue, and 5 green marbles. If one marble is picked at random, what is the probability it is blue?

    Answer: 3/12

    There are 3 blue marbles out of 4+3+5=12 total, so probability = 3/12.

  4. What is the value of 3² + 4²?

    Answer: 25

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

  5. If a train travels 240 km in 3 hours, what is its average speed?

    Answer: 80 km/h

    Speed = distance ÷ time = 240 ÷ 3 = 80 km/h.

  6. What is the next term in the sequence: 2, 6, 18, 54, ___?

    Answer: 162

    Each term is multiplied by 3, so 54 × 3 = 162.

  7. A triangle has angles measuring 45° and 75°. What is the measure of the third angle?

    Answer: 60°

    The angles of a triangle sum to 180°, so the third angle = 180 − 45 − 75 = 60°.