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Cornerstone · Grades 3–5 Keystones #1 9 April 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 9 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 43

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 230 in the ratio 2:1:2

    Answer: 92, 46 and 92
  5. 5. Statistics Mean

    Find the mean of: 12, 17, 9, 8, 5

    Answer: 10.2

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