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Cornerstone · Grades 3–5 Keystones #1 25 June 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 1⁄3

    Answer: 10⁄21
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 35

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 2:2:1

    Answer: 80, 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 37, 12, 9, 9, 13, 10

    Answer: 15

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