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Cornerstone · Grades 3–5 Keystones #1 11 April 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 11 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 15

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 11cm

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:3:1

    Answer: 12, 36 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 50, 18, 30, 19, 32, 11

    Answer: 26.7

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