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Cornerstone · Grades 3–5 Keystones #1 26 October 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 2⁄10

    Answer: 3⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 16 = 23

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 3:1:3

    Answer: 78, 26 and 78
  5. 5. Statistics Mean

    Calculate the mean of: 20, 9, 12, 15, 24, 50, 18. Give your answer to 2 decimal places

    Answer: 21.14