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OAR Math Skills: Arithmetic and Number Operations Flashcards

6 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 6 OAR Math Skills: Arithmetic and Number Operations flashcards as text

  1. What is the value of 3/4 + 5/8?

    Answer: 11/8

    Converting 3/4 to 6/8 and adding 5/8 gives 11/8.

  2. A sailor earns $2,400 per month. If 25% is withheld for taxes, what is the take-home pay?

    Answer: $1,800

    25% of $2,400 is $600, so take-home pay is $2,400 − $600 = $1,800.

  3. What is 0.045 expressed as a percentage?

    Answer: 4.5%

    Multiplying 0.045 by 100 converts the decimal to 4.5%.

  4. Which of the following is the greatest common factor (GCF) of 48 and 36?

    Answer: 12

    The factors of 48 and 36 share 12 as their largest common divisor.

  5. If a ship travels 240 nautical miles in 8 hours, what is its average speed in knots?

    Answer: 30 knots

    Speed = distance ÷ time = 240 ÷ 8 = 30 knots.

  6. What is the least common multiple (LCM) of 4, 6, and 9?

    Answer: 36

    The smallest number divisible by 4, 6, and 9 is 36.