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Cornerstone · Grades 3–5 Keystones #1 4 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 4 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 51

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 39, 48, 13, 8, 9, 24, 11

    Answer: 21.7

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