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Cornerstone · Grades 3–5 Keystones #1 27 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 27 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 18 = 26

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

    Calculate the hypotenuse when a = 3cm and b = 7cm

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 23, 7, 38, 9, 33, 31, 42, 26

    Answer: 26.1

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