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Cornerstone · Grades 3–5 Keystones #1 24 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄6

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

    Solve: 4x + 11 = 23

    Answer: x = 3
  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 112 in the ratio 3:2:3

    Answer: 42, 28 and 42
  5. 5. Statistics Mean

    Find the mean of: 14, 10, 15, 13

    Answer: 13

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