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Cornerstone · Grades 3–5 Keystones #1 27 July 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 6⁄7

    Answer: 44⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 22

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

    Calculate the hypotenuse when a = 7cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 77 in the ratio 2:4:1

    Answer: 22, 44 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 42, 23, 8, 7, 7, 6, 34. Give your answer to 2 decimal places

    Answer: 18.14

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