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Cornerstone · Grades 3–5 Keystones #1 4 October 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 25

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 98 in the ratio 1:3:3

    Answer: 14, 42 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 32, 49, 40, 6, 33, 13. Give your answer to 2 decimal places

    Answer: 28.83

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