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Cornerstone · Grades 3–5 Keystones #1 1 January 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 7 = 33

    Answer: x = 8
  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

    Divide 102 in the ratio 1:4:1

    Answer: 17, 68 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 24, 48, 14, 26, 47, 14, 14, 11

    Answer: 24.75

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