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Cornerstone · Grades 3–5 Keystones #1 13 November 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄6

    Answer: 13⁄21
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 15

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 2:3:2

    Answer: 32, 48 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 5, 6, 20, 22, 22, 6, 9, 7. Give your answer to 2 decimal places

    Answer: 12.13

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