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Cornerstone · Grades 3–5 Keystones #1 9 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄4

    Answer: 15⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 48

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

    Calculate the hypotenuse when a = 9cm and b = 6cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 44 in the ratio 1:3

    Answer: 11 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 13, 13, 27, 23, 13, 43, 46, 20

    Answer: 24.8

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