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Cornerstone · Grades 3–5 Keystones #1 17 July 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 17 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 5⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 42

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

    Calculate the hypotenuse when a = 11cm and b = 13cm

    Answer: 17.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 3:2:4

    Answer: 81, 54 and 108
  5. 5. Statistics Mean

    Find the mean of: 8, 3, 12, 7, 9

    Answer: 7.8

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