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Cornerstone · Grades 3–5 Keystones #1 18 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 3⁄5

    Answer: 46⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 73

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 1:3

    Answer: 17 and 51
  5. 5. Statistics Mean

    Find the mean of: 20, 15, 4, 19, 2

    Answer: 12

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