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Cornerstone · Grades 3–5 Keystones #1 29 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄6

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 5x - 12 = 23

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics Mean

    Calculate the mean of: 9, 36, 28, 48, 22, 17, 11. Give your answer to 2 decimal places

    Answer: 24.43

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