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MATH Flashcards

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

Read the first 7 MATH flashcards as text

  1. A circle has a diameter of 10 cm. What is its circumference? (Use π ≈ 3.14)

    Answer: 31.4 cm

    Circumference = πd = 3.14 × 10 = 31.4 cm.

  2. Rearrange to make t the subject: v = u + at

    Answer: t = (v − u) / a

    Subtract u: v − u = at, then divide by a: t = (v − u) / a.

  3. What is the lowest common multiple (LCM) of 12 and 18?

    Answer: 36

    LCM(12, 18) = 36, since 36 is the smallest number divisible by both 12 and 18.

  4. A data set has a mean of 8 and contains the values 5, 7, 10, x. What is x?

    Answer: 10

    Mean = (5 + 7 + 10 + x) / 4 = 8, so 22 + x = 32, giving x = 10.

  5. What is the equation of a line with gradient 3 that passes through (0, −2)?

    Answer: y = 3x − 2

    Using y = mx + c with m = 3 and c = −2 gives y = 3x − 2.

  6. A spinner has 8 equal sections numbered 1 to 8. What is the probability of landing on an even number?

    Answer: 1/2

    Even numbers 1–8 are {2, 4, 6, 8} = 4 outcomes, so P = 4/8 = 1/2.

  7. Solve: x² − 5x + 6 = 0

    Answer: x = 2 or x = 3

    Factorising: (x − 2)(x − 3) = 0, so x = 2 or x = 3.