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Cornerstone · Grades 3–5 Keystones #1 28 January 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 28 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄4

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 2x - 16 = -4

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

    Calculate the hypotenuse when a = 4cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics Mean

    Find the mean of: 2, 16, 17, 21

    Answer: 14

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