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Cornerstone · Grades 3–5 Keystones #1 18 November 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 18 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 96

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 1:3:4

    Answer: 27, 81 and 108
  5. 5. Statistics Mean

    Find the mean of: 15, 16, 3

    Answer: 11.333333333333

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