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Cornerstone · Grades 3–5 Keystones #1 13 February 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 13 February 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 5⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x - 5 = 9

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

    Calculate the hypotenuse when a = 6cm and b = 13cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics Mean

    Find the mean of: 12, 14, 9

    Answer: 11.666666666667

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