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Cornerstone · Grades 3–5 Keystones #1 16 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 14 = 42

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 4cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 1:2

    Answer: 32 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 12, 11, 41, 20, 35, 10, 50, 10

    Answer: 23.6

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