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Calculation Fundamentals Flashcards

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

Read the first 7 Calculation Fundamentals flashcards as text

  1. A student scores 72, 85, 91, 68, and 79 on five tests. What is the mean score?

    Answer: 79.0

    Mean = (72+85+91+68+79)/5 = 395/5 = 79.0.

  2. What is 3/8 expressed as a decimal?

    Answer: 0.375

    3 ÷ 8 = 0.375.

  3. If a car travels 240 km in 3 hours, what is its average speed in km/h?

    Answer: 80 km/h

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

  4. Which of the following is equivalent to 2^5 × 2^3?

    Answer: 2^8

    When multiplying powers with the same base, add exponents: 2^(5+3) = 2^8.

  5. 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.

  6. What is 15% of 240?

    Answer: 36

    15% of 240 = 0.15 × 240 = 36.

  7. Simplify the ratio 36:48.

    Answer: 3:4

    Divide both terms by their GCF (12): 36÷12 = 3 and 48÷12 = 4, giving 3:4.