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Math Flashcards

7 cards from real MASS 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 flashcards as text

  1. What is the area of a circle with radius 5 (use π ≈ 3.14)?

    Answer: 78.5

    Area = πr² = 3.14 × 25 = 78.5.

  2. Solve for y: y/4 = 9.

    Answer: 36

    Multiply both sides by 4 to get y = 36.

  3. What is 0.6 written as a percent?

    Answer: 60%

    Multiply 0.6 by 100 to get 60%.

  4. If 5 pencils cost $1.25, how much does one pencil cost?

    Answer: $0.25

    $1.25 ÷ 5 = $0.25 per pencil.

  5. What is the value of x in the proportion 3/6 = x/10?

    Answer: 5

    Cross-multiply: 3 × 10 = 6x, so 30 = 6x and x = 5.

  6. A bag has 3 red and 2 blue marbles. What is the probability of drawing red?

    Answer: 3/5

    There are 3 red out of 5 total marbles, so the probability is 3/5.

  7. What is the absolute value of -15?

    Answer: 15

    Absolute value is the distance from zero, so |-15| = 15.