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Cornerstone · Grades 3–5 Keystones #1 23 September 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 23 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 28

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

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

    Share 36 in the ratio 1:3

    Answer: 9 and 27
  5. 5. Statistics Mean

    Find the mean of: 7, 20, 16, 5, 11

    Answer: 11.8

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