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Cornerstone · Grades 3–5 Keystones #1 14 September 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 September 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 5⁄7

    Answer: 37⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x + 4 = 14

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

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 4:1

    Answer: 32 and 8
  5. 5. Statistics Mean

    Calculate the mean of: 5, 14, 13, 44, 14, 24

    Answer: 19

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