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Mathematics Flashcards

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

Read the first 6 Mathematics flashcards as text

  1. If f(x) = 2x² - 3, find f(4).

    Answer: 29

    f(4) = 2(4²) - 3 = 2(16) - 3 = 32 - 3 = 29.

  2. A car travels 150 km in 2.5 hours. What is its average speed?

    Answer: 60 km/h

    Speed = distance ÷ time = 150 ÷ 2.5 = 60 km/h.

  3. What is the median of: 3, 7, 2, 9, 5?

    Answer: 5

    Arranged in order: 2, 3, 5, 7, 9. The middle value (3rd of 5) is 5.

  4. Two angles of a triangle are 65° and 80°. What is the third angle?

    Answer: 35°

    Sum of angles in a triangle = 180°. Third angle = 180° - 65° - 80° = 35°.

  5. What is the LCM of 4 and 6?

    Answer: 12

    Multiples of 4: 4,8,12,16... Multiples of 6: 6,12,18... LCM = 12.

  6. Reflect the point (3, -2) in the x-axis. What are the new coordinates?

    Answer: (3, 2)

    Reflecting in the x-axis changes the sign of the y-coordinate: (3, -2) becomes (3, 2).

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. file.go.gov.sg — Retake policy · verified Nov 2026
  2. seab.gov.sg — Passing score, score release, test delivery, eligibility, fees, registration · verified Nov 2026