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

Five GCSE retrieval questions · 7 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 4⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 13

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 3:2:2

    Answer: 60, 40 and 40
  5. 5. Statistics Mean

    Find the mean of: 7, 6, 7, 23, 17

    Answer: 12

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