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Cornerstone · Grades 3–5 Keystones #1 24 October 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 24 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 8 = 29

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 25, 12, 39, 21, 16, 10, 47

    Answer: 24.3

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