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Cornerstone · Grades 3–5 Keystones #1 11 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 11 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 6⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 7

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 1:3:4

    Answer: 26, 78 and 104
  5. 5. Statistics Mean

    Find the mean of: 16, 10, 7, 15, 14

    Answer: 12.4

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