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Cornerstone · Grades 3–5 Keystones #1 18 July 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 18 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 2⁄8

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

    Solve: 2x + 5 = 13

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 3:3:4

    Answer: 33, 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 12, 5, 5, 44, 43, 33, 15, 24

    Answer: 22.6

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