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Cornerstone · Grades 3–5 Keystones #1 8 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 1⁄4

    Answer: 9⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 36

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 47, 27, 12, 17, 50, 10, 46. Give your answer to 2 decimal places

    Answer: 29.86

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