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Cornerstone · Grades 3–5 Keystones #1 1 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 29

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

    Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 4:1:3

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

    Calculate the mean of: 26, 16, 44, 47, 40, 49, 13, 27

    Answer: 32.75

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