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Cornerstone · Grades 3–5 Keystones #1 16 November 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄3

    Answer: 13⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 33

    Answer: x = 10
  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 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 36, 50, 25, 33, 25, 36. Give your answer to 2 decimal places

    Answer: 34.17

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