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Cornerstone · Grades 3–5 Keystones #1 23 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 1⁄3

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 56

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Find the mean of: 7, 7, 8, 10

    Answer: 8

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