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Cornerstone · Grades 3–5 Keystones #1 31 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 31 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 6⁄8

    Answer: 19⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 53

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

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

    Divide 168 in the ratio 1:3:4

    Answer: 21, 63 and 84
  5. 5. Statistics Mean

    Find the mean of: 9, 8, 1

    Answer: 6

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