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Cornerstone · Grades 3–5 Keystones #1 25 November 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 25 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 1⁄11

    Answer: 6⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 53

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 77 in the ratio 4:2:1

    Answer: 44, 22 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 44, 5, 47, 40, 18, 45, 19, 30

    Answer: 31

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