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Cornerstone · Grades 3–5 Keystones #1 5 August 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 3⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 19 = -1

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 1:3:2

    Answer: 27, 81 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 21, 5, 47, 6, 7, 24. Give your answer to 2 decimal places

    Answer: 18.33

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