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Cornerstone · Grades 3–5 Keystones #1 25 November 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 25 November 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄5

    Answer: 13⁄15
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 32

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 3:1:4

    Answer: 42, 14 and 56
  5. 5. Statistics Mean

    Find the mean of: 11, 6, 19

    Answer: 12

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