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Cornerstone · Grades 3–5 Keystones #1 31 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 6⁄8

    Answer: 31⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 75

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 3:1

    Answer: 48 and 16
  5. 5. Statistics Mean

    Find the mean of: 2, 10, 15, 14, 9

    Answer: 10

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