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Cornerstone · Grades 3–5 Keystones #1 27 February 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 27 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 2⁄4

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = 3

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 5cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 232 in the ratio 3:1:4

    Answer: 87, 29 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 38, 22, 11, 32, 22, 35, 36, 29

    Answer: 28.1

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