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Cornerstone · Grades 3–5 Keystones #1 22 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 46

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 11cm

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 1:4

    Answer: 15 and 60
  5. 5. Statistics Mean

    Find the mean of: 3, 18, 19, 16

    Answer: 14

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