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Cornerstone · Grades 3–5 Keystones #1 28 March 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄5

    Answer: 19⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 15 = 34

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 253 in the ratio 4:4:3

    Answer: 92, 92 and 69
  5. 5. Statistics Mean

    Find the mean of: 5, 11, 4, 4

    Answer: 6

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