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Cornerstone · Grades 3–5 Keystones #1 8 September 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 8 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

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

    Solve: 3x + 13 = 31

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

    Calculate the hypotenuse when a = 10cm and b = 13cm

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 4:2:3

    Answer: 60, 30 and 45
  5. 5. Statistics Mean

    Find the mean of: 7, 9, 15, 2

    Answer: 8.25

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