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

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 2⁄11

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

    Solve: 5x + 5 = 20

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 3:1:1

    Answer: 42, 14 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 8, 45, 22, 11, 33, 39, 46, 22

    Answer: 28.3

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