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Cornerstone · Grades 3–5 Keystones #1 16 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 4⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 9

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 68 in the ratio 1:2:1

    Answer: 17, 34 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 18, 42, 46, 32, 38, 6

    Answer: 30.3

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