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OAR Math Skills Flashcards

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

Read the first 7 OAR Math Skills flashcards as text

  1. What is the least common multiple (LCM) of 8 and 12?

    Answer: 24

    Multiples of 8: 8,16,24…; multiples of 12: 12,24…; LCM = 24.

  2. A car uses 5 gallons of gas to travel 175 miles. How many miles can it travel on 8 gallons?

    Answer: 280 miles

    Rate = 175/5 = 35 mpg; 35 × 8 = 280 miles.

  3. Solve the inequality: 2x − 4 > 10

    Answer: x > 7

    2x > 14, so x > 7.

  4. What is 15% of 320?

    Answer: 48

    0.15 × 320 = 48.

  5. A right triangle has legs of 9 and 12. What is the length of the hypotenuse?

    Answer: 15

    c² = 9² + 12² = 81 + 144 = 225; c = 15.

  6. What is the value of |−18| + |5|?

    Answer: 23

    Absolute values are always non-negative: 18 + 5 = 23.

  7. A number is increased by 25% and the result is 100. What was the original number?

    Answer: 80

    1.25 × n = 100; n = 100 / 1.25 = 80.