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Cornerstone · Grades 3–5 Keystones #1 10 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 10 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 36

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 3:2

    Answer: 36 and 24
  5. 5. Statistics Mean

    Find the mean of: 20, 19, 8, 6, 7

    Answer: 12

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