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Cornerstone · Grades 3–5 Keystones #1 28 April 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 28 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 41

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 2:1:1

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

    Calculate the mean of: 40, 48, 8, 41, 37, 24

    Answer: 33

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