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Cornerstone · Grades 3–5 Keystones #1 22 April 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 59

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 2:1

    Answer: 72 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 36, 40, 6, 43, 21, 31

    Answer: 29.5

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