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Cornerstone · Grades 3–5 Keystones #1 22 January 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 10 = 62

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

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 100 in the ratio 2:2:1

    Answer: 40, 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 18, 11, 16

    Answer: 15

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