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Cornerstone · Grades 3–5 Keystones #1 15 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 15 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 10 = 26

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

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 4:1:3

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

    Calculate the mean of: 13, 41, 8, 38, 46, 40, 19, 34

    Answer: 29.9

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