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Cornerstone · Grades 3–5 Keystones #1 18 March 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 3⁄4

    Answer: 19⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 44

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 126 in the ratio 3:4

    Answer: 54 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 48, 30, 22, 30, 50, 34

    Answer: 35.7

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