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Cornerstone · Grades 3–5 Keystones #1 15 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

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

    Solve: 6x + 6 = 66

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 1:2:2

    Answer: 16, 32 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 25, 10, 32, 30, 14, 48, 48. Give your answer to 2 decimal places

    Answer: 29.57

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