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Cornerstone · Grades 3–5 Keystones #1 26 July 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 26 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 2⁄12

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

    Solve: 4x + 9 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 8cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 264 in the ratio 4:4:3

    Answer: 96, 96 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 10, 9, 13, 20, 12, 32

    Answer: 16

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