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Cornerstone · Grades 3–5 Keystones #1 28 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 4⁄7

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 48

    Answer: x = 15
  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 125 in the ratio 2:2:1

    Answer: 50, 50 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 9, 16, 48, 26, 13, 33, 46, 15

    Answer: 25.8

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