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Cornerstone · Grades 3–5 Keystones #1 24 January 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 24 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 2x - 14 = 4

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 4cm

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 31, 8, 21, 43, 19, 9, 8

    Answer: 19.9

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