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Cornerstone · Grades 3–5 Keystones #1 8 April 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 8 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 44

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics Mean

    Calculate the mean of: 46, 38, 21, 24, 21, 10, 33

    Answer: 27.6

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