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Cornerstone · Grades 3–5 Keystones #1 11 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄3

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 33

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 3:2

    Answer: 30 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 33, 23, 24, 28, 6, 35, 30. Give your answer to 2 decimal places

    Answer: 25.57

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