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Cornerstone · Grades 3–5 Keystones #1 18 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 3⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 28

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

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 3:2:3

    Answer: 60, 40 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 24, 13, 30, 15, 48, 11, 23. Give your answer to 2 decimal places

    Answer: 23.43