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Cornerstone · Grades 3–5 Keystones #1 18 September 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 September 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄6

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 38

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.56cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 2:3:1

    Answer: 44, 66 and 22
  5. 5. Statistics Mean

    Find the mean of: 4, 6, 6, 24

    Answer: 10

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