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Cornerstone · Grades 3–5 Keystones #1 7 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 44

    Answer: x = 14
  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 115 in the ratio 1:2:2

    Answer: 23, 46 and 46
  5. 5. Statistics Mean

    Find the mean of: 3, 18, 12

    Answer: 11

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