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Cornerstone · Grades 3–5 Keystones #1 9 March 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 2⁄6

    Answer: 19⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x + 5 = 40

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 2:1:1

    Answer: 88, 44 and 44
  5. 5. Statistics Mean

    Find the mean of: 11, 11, 14, 10

    Answer: 11.5

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