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Cornerstone · Grades 3–5 Keystones #1 14 August 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 14 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 38

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 203 in the ratio 3:1:3

    Answer: 87, 29 and 87
  5. 5. Statistics Mean

    Calculate the mean of: 30, 45, 43, 49, 19, 33

    Answer: 36.5

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