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Cornerstone · Grades 3–5 Keystones #1 13 November 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 13 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

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

    Solve: 4x + 9 = 53

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

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 3:3:2

    Answer: 72, 72 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 45, 39, 48, 49, 46, 36, 38

    Answer: 43

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