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Cornerstone · Grades 3–5 Keystones #1 28 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 4⁄7

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 61

    Answer: x = 8
  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 40 in the ratio 1:4

    Answer: 8 and 32
  5. 5. Statistics Mean

    Find the mean of: 4, 6, 5

    Answer: 5

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