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Cornerstone · Grades 3–5 Keystones #1 30 July 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 30 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

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

    Solve: 3x + 13 = 40

    Answer: x = 9
  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 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 7, 20, 36, 9, 34, 41, 43. Give your answer to 2 decimal places

    Answer: 27.14

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