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Cornerstone · Grades 3–5 Keystones #1 13 February 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 13 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 3⁄12

    Answer: 2⁄3
  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 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 2:1

    Answer: 22 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 36, 34, 29, 10, 46, 13, 16. Give your answer to 2 decimal places

    Answer: 26.29

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