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Cornerstone · Grades 3–5 Keystones #1 23 December 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 23 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 3⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x - 13 = 15

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 68 in the ratio 1:2:1

    Answer: 17, 34 and 17
  5. 5. Statistics Mean

    Find the mean of: 13, 14, 13, 9, 16

    Answer: 13

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