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Cornerstone · Grades 3–5 Keystones #1 3 September 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄8

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 77

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 1:2

    Answer: 8 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 32, 44, 18, 45, 33, 14, 18, 43

    Answer: 30.9

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