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Cornerstone · Grades 3–5 Keystones #1 12 June 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 2⁄6

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 44

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

    Calculate the hypotenuse when a = 7cm and b = 12cm

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:1:2

    Answer: 21, 21 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 8, 34, 31, 32, 38, 7, 35, 35

    Answer: 27.5

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