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Cornerstone · Grades 3–5 Keystones #1 2 February 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 February 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 1⁄10

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 59

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 261 in the ratio 3:2:4

    Answer: 87, 58 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 6, 39, 30, 50, 35, 45, 5, 6

    Answer: 27