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Cornerstone · Grades 3–5 Keystones #1 25 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 33

    Answer: x = 6
  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 190 in the ratio 4:3:3

    Answer: 76, 57 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 33, 27, 23, 48, 41, 33, 18, 35

    Answer: 32.3

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