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Cornerstone · Grades 3–5 Keystones #1 22 December 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 22 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x + 4 = 26

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics Mean

    Find the mean of: 13, 5, 22, 12

    Answer: 13

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