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Cornerstone · Grades 3–5 Keystones #1 14 December 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 39

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

    Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 224 in the ratio 4:1:3

    Answer: 112, 28 and 84
  5. 5. Statistics Mean

    Find the mean of: 18, 16, 8

    Answer: 14

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