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Cornerstone · Grades 3–5 Keystones #1 25 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 25 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 32

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 125 in the ratio 1:1:3

    Answer: 25, 25 and 75
  5. 5. Statistics Mean

    Find the mean of: 13, 12, 4

    Answer: 9.6666666666667

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