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Cornerstone · Grades 3–5 Keystones #1 14 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 37

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

    Calculate the hypotenuse when a = 4cm and b = 5cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 2:1:2

    Answer: 54, 27 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 8, 32, 6, 7, 13, 39, 22

    Answer: 18.1

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