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Cornerstone · Grades 3–5 Keystones #1 21 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 6⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 56

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 125 in the ratio 2:1:2

    Answer: 50, 25 and 50
  5. 5. Statistics Mean

    Find the mean of: 15, 2, 13, 20, 8

    Answer: 11.6

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