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Cornerstone · Grades 3–5 Keystones #1 18 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄6

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

    Solve: 4x + 9 = 21

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

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

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

    Divide 78 in the ratio 3:1:2

    Answer: 39, 13 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 29, 37, 15, 32, 42, 24

    Answer: 29.8

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