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Cornerstone · Grades 3–5 Keystones #1 29 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄7

    Answer: 17⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x - 11 = 94

    Answer: x = 15
  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 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 20, 16, 36, 29, 19, 29, 22. Give your answer to 2 decimal places

    Answer: 24.43

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