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Cornerstone · Grades 3–5 Keystones #1 10 March 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 74

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 3:2:4

    Answer: 42, 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 15, 12, 15, 14

    Answer: 14

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