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Cornerstone · Grades 3–5 Keystones #1 17 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 75

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 4:3:1

    Answer: 108, 81 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 5, 26, 17, 31, 13, 39, 45, 32

    Answer: 26

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