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Cornerstone · Grades 3–5 Keystones #1 9 October 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 9 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 7⁄9

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

    Solve: 8x - 7 = 81

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 153 in the ratio 2:3:4

    Answer: 34, 51 and 68
  5. 5. Statistics Mean

    Find the mean of: 10, 14, 19, 9

    Answer: 13

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