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Cornerstone · Grades 3–5 Keystones #1 31 December 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 31 December 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 2⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 22

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 203 in the ratio 4:1:2

    Answer: 116, 29 and 58
  5. 5. Statistics Mean

    Calculate the mean of: 32, 24, 22, 32, 32, 17, 47, 8

    Answer: 26.8

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