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

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

  1. 1. Number Adding fractions

    Add: 3⁄5 + 1⁄3

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 11

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 4cm

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics Mean

    Find the mean of: 9, 14, 16, 10

    Answer: 12.25

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