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Cornerstone · Grades 3–5 Keystones #1 23 March 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 March 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄3

    Answer: 16⁄21
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 28

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Find the mean of: 16, 22, 7

    Answer: 15

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