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Cornerstone · Grades 3–5 Keystones #1 22 August 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x + 11 = 38

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 28, 49, 44, 27, 48, 33, 22. Give your answer to 2 decimal places

    Answer: 35.86

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