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Cornerstone · Grades 3–5 Keystones #1 24 April 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 24 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 3⁄8

    Answer: 37⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x - 7 = 63

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 1:4:3

    Answer: 23, 92 and 69
  5. 5. Statistics Mean

    Find the mean of: 20, 8, 20, 10, 20

    Answer: 15.6

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