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Cornerstone · Grades 3–5 Keystones #1 10 June 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 53

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 49, 50, 16, 22, 41, 31, 35. Give your answer to 2 decimal places

    Answer: 34.86

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