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Cornerstone · Grades 3–5 Keystones #1 11 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x - 7 = 43

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 1:4:4

    Answer: 15, 60 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 49, 29, 25, 9, 27, 11, 48, 29

    Answer: 28.4

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