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Cornerstone · Grades 3–5 Keystones #1 15 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄3

    Answer: 17⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 47

    Answer: x = 6
  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 240 in the ratio 1:2:1

    Answer: 60, 120 and 60
  5. 5. Statistics Mean

    Find the mean of: 8, 17, 20

    Answer: 15

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