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Cornerstone · Grades 3–5 Keystones #1 19 July 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 19 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x - 19 = 20

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 6cm

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics Mean

    Find the mean of: 19, 19, 5, 15, 17

    Answer: 15

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