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Cornerstone · Grades 3–5 Keystones #1 4 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄3

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

    Solve: 5x + 6 = 41

    Answer: x = 7
  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 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 35, 27, 20, 45, 43, 39. Give your answer to 2 decimal places

    Answer: 34.83

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