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Cornerstone · Grades 3–5 Keystones #1 2 August 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 August 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 2⁄11

    Answer: 3⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 37

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 1:1:2

    Answer: 44, 44 and 88
  5. 5. Statistics Mean

    Calculate the mean of: 23, 50, 30, 37, 26, 24. Give your answer to 2 decimal places

    Answer: 31.67

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