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Cornerstone · Grades 3–5 Keystones #1 15 December 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 15 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 6⁄8

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

    Solve: 2x - 10 = 16

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 144 in the ratio 4:2:3

    Answer: 64, 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 24, 18, 36, 47, 9, 10

    Answer: 24

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