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

Five GCSE retrieval questions · 1 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 1⁄4

    Answer: 23⁄28
  2. 2. Algebra Two-step equations

    Solve: 3x + 15 = 48

    Answer: x = 11
  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 216 in the ratio 3:1:4

    Answer: 81, 27 and 108
  5. 5. Statistics Mean

    Find the mean of: 2, 6, 15, 15

    Answer: 9.5

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