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Cornerstone · Grades 3–5 Keystones #1 20 September 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 20 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

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

    Solve: 5x + 7 = 32

    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 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 20, 32, 22, 46, 17, 21. Give your answer to 2 decimal places

    Answer: 26.33

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