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Cornerstone · Grades 3–5 Keystones #1 9 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 9 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 4⁄10

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

    Solve: 2x + 7 = 17

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

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 1:3

    Answer: 17 and 51
  5. 5. Statistics Mean

    Find the mean of: 5, 20, 2, 2, 16

    Answer: 9

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