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Mathematics Concepts Flashcards

6 cards from real PSLE 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 Concepts flashcards as text

  1. What is the order of rotational symmetry of a square?

    Answer: 4

    A square looks the same 4 times during a full 360° rotation (at 90°, 180°, 270°, and 360°), so it has order 4.

  2. Express 7/20 as a percentage.

    Answer: 35%

    7/20 = 7 × 5 / (20 × 5) = 35/100 = 35%.

  3. What is the next number in the pattern: 2, 6, 18, 54, ___?

    Answer: 162

    Each number is multiplied by 3. 54 × 3 = 162.

  4. How many lines of symmetry does an equilateral triangle have?

    Answer: 3

    An equilateral triangle has 3 lines of symmetry, one from each vertex to the midpoint of the opposite side.

  5. What is the value of 4.5 × 10³?

    Answer: 4,500

    10³ = 1,000. So 4.5 × 1,000 = 4,500.

  6. If a = 5 and b = 3, what is the value of 2a + 3b?

    Answer: 19

    2a + 3b = 2(5) + 3(3) = 10 + 9 = 19.

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