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Math: Computation and Problem-Solving Flashcards

7 cards from real CBEST 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: Computation and Problem-Solving flashcards as text

  1. The ratio of boys to girls in a class is 3:4. If there are 28 students total, how many are boys?

    Answer: 12

    Boys make up 3/7 of students, so 3/7 × 28 = 12 boys.

  2. What is 15% of 240?

    Answer: 36

    15% of 240 = 0.15 × 240 = 36.

  3. A box contains 3 red, 5 blue, and 2 green marbles. What is the probability of randomly selecting a blue marble?

    Answer: 1/2

    There are 5 blue marbles out of 10 total, so probability = 5/10 = 1/2.

  4. Evaluate: 48 ÷ (6 − 2) × 3

    Answer: 36

    Following order of operations: 48 ÷ 4 × 3 = 12 × 3 = 36.

  5. A rectangle has a perimeter of 54 cm. If the length is 16 cm, what is the width?

    Answer: 11 cm

    Perimeter = 2(l + w), so 54 = 2(16 + w), giving w = 11 cm.

  6. Convert 0.045 to a fraction in simplest form.

    Answer: 9/200

    0.045 = 45/1000, which simplifies to 9/200 by dividing both by 5.

  7. Train A leaves at 8:00 AM traveling 60 mph. Train B leaves at 9:00 AM on the same route at 75 mph. At what time does Train B catch Train A?

    Answer: 1:00 PM

    Train A has a 60-mile head start; Train B gains 15 mph, so catches up in 60/15 = 4 hours after 9:00 AM = 1:00 PM.