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Cornerstone · Grades 3–5 Keystones #1 25 April 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 25 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 33

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

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

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 4:1

    Answer: 52 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 29, 24, 6, 17, 42, 28

    Answer: 24.3

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