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Cornerstone · Grades 3–5 Keystones #1 21 September 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 September 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 3⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 34

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics Mean

    Find the mean of: 12, 5, 9, 14

    Answer: 10

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