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Cornerstone · Grades 3–5 Keystones #1 22 June 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 37

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:1:2

    Answer: 60, 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 50, 26, 7, 16, 5, 17. Give your answer to 2 decimal places

    Answer: 20.17

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