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Cornerstone · Grades 3–5 Keystones #1 16 February 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 16 February 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 5⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 4:1:3

    Answer: 68, 17 and 51
  5. 5. Statistics Mean

    Find the mean of: 10, 9, 10, 16, 18

    Answer: 12.6

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