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

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 68

    Answer: x = 11
  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 176 in the ratio 3:4:1

    Answer: 66, 88 and 22
  5. 5. Statistics Mean

    Find the mean of: 9, 17, 12, 18, 14

    Answer: 14

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