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

  1. 1. Number Adding fractions

    Add: 1⁄8 + 5⁄7

    Answer: 47⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 58

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 1:4

    Answer: 14 and 56
  5. 5. Statistics Mean

    Find the mean of: 5, 13, 11, 20, 1

    Answer: 10

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