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Cornerstone · Grades 3–5 Keystones #1 28 June 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 4⁄7

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 64

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

    Calculate the hypotenuse when a = 11cm and b = 5cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 4:4:3

    Answer: 72, 72 and 54
  5. 5. Statistics Mean

    Find the mean of: 20, 7, 20

    Answer: 15.666666666667

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