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Cornerstone · Grades 3–5 Keystones #1 8 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 8 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 34

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 6cm

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 50 in the ratio 3:1:1

    Answer: 30, 10 and 10
  5. 5. Statistics Mean

    Find the mean of: 9, 7, 8, 10, 9

    Answer: 8.6

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