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Cornerstone · Grades 3–5 Keystones #1 31 July 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 31 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 7⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 31

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 1:4:2

    Answer: 21, 84 and 42
  5. 5. Statistics Mean

    Find the mean of: 16, 9, 2, 14, 3

    Answer: 8.8

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