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Cornerstone · Grades 3–5 Keystones #1 12 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 12 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄3

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 19

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 11, 11, 30, 11, 28, 34, 23

    Answer: 21.1

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