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Cornerstone · Grades 3–5 Keystones #1 13 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 24

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

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 114 in the ratio 4:1:1

    Answer: 76, 19 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 47, 10, 46, 47, 22, 9, 6. Give your answer to 2 decimal places

    Answer: 26.71

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