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Cornerstone · Grades 3–5 Keystones #1 24 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 24 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 5⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 18

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

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 234 in the ratio 3:4:2

    Answer: 78, 104 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 13, 7, 17, 38, 38, 44

    Answer: 26.2

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