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Cornerstone · Grades 3–5 Keystones #1 13 August 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 1⁄12

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 23

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 1:2

    Answer: 5 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 27, 29, 45, 11, 32, 33

    Answer: 29.5

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