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Cornerstone · Grades 3–5 Keystones #1 16 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄7

    Answer: 24⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 35

    Answer: x = 10
  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

    Divide 220 in the ratio 4:3:3

    Answer: 88, 66 and 66
  5. 5. Statistics Mean

    Calculate the mean of: 48, 43, 34, 43, 48, 36

    Answer: 42

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