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Cornerstone · Grades 3–5 Keystones #1 10 October 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 10 October 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 11 = 13

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

    Calculate the hypotenuse when a = 4cm and b = 12cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 1:2:1

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

    Calculate the mean of: 30, 50, 37, 19, 39, 32

    Answer: 34.5

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