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Cornerstone · Grades 3–5 Keystones #1 12 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

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

    Solve: 5x + 7 = 37

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 209 in the ratio 4:3:4

    Answer: 76, 57 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 42, 30, 12, 49, 14, 15

    Answer: 27

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