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Cornerstone · Grades 3–5 Keystones #1 25 February 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 25 February 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 29

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 132 in the ratio 3:1:2

    Answer: 66, 22 and 44
  5. 5. Statistics Mean

    Find the mean of: 12, 19, 14, 5, 13

    Answer: 12.6

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