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Cornerstone · Grades 3–5 Keystones #1 10 September 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 10 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 19 = 5

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 11cm

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

    Divide 208 in the ratio 1:2:1

    Answer: 52, 104 and 52
  5. 5. Statistics Mean

    Find the mean of: 11, 14, 16

    Answer: 13.666666666667

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