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Cornerstone · Grades 3–5 Keystones #1 4 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 2⁄12

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

    Solve: 2x + 12 = 32

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 7, 24, 31, 46, 18, 45, 47, 27. Give your answer to 2 decimal places

    Answer: 30.63

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