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NAPLAN Numeracy Year 9 Practice Flashcards

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

Read the first 7 NAPLAN Numeracy Year 9 Practice flashcards as text

  1. A bicycle costs $650. An instalment plan requires a $130 deposit plus 12 monthly payments of $45. How much extra does the instalment plan cost compared to paying in full?

    Answer: $20

    Total instalment = $130 + 12×$45 = $670. Extra = $670 − $650 = $20

  2. Which whole number is closest to √200?

    Answer: 14

    14² = 196 and 15² = 225. √200 ≈ 14.1, so closest is 14

  3. Monthly rainfall (mm) for Sydney over 6 months: Jan 90, Feb 110, Mar 130, Apr 120, May 100, Jun 130. What is the mean monthly rainfall?

    Answer: 113 mm

    Mean = (90+110+130+120+100+130) ÷ 6 = 680 ÷ 6 ≈ 113 mm

  4. A triangular garden has a base of 12 m and a perpendicular height of 8 m. What is the area of the garden?

    Answer: 48 m²

    Area = ½ × base × height = ½ × 12 × 8 = 48 m²

  5. A water tank holds 3 000 litres when full. The tank is currently 35% full. How many more litres are needed to fill it?

    Answer: 1 950 L

    Current = 35% × 3000 = 1050 L. Needed = 3000 − 1050 = 1950 L

  6. Which expression is equivalent to 4(2x − 3) + 5x?

    Answer: 13x − 12

    4(2x−3) + 5x = 8x − 12 + 5x = 13x − 12

  7. The angles of a quadrilateral are in the ratio 2 : 3 : 4 : 6. What is the size of the largest angle?

    Answer: 144°

    Sum = 360°. Total parts = 15. Largest = (6/15) × 360° = 144°