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

Five GCSE retrieval questions · 3 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 31

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

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 1:3:4

    Answer: 24, 72 and 96
  5. 5. Statistics Mean

    Calculate the mean of: 31, 32, 22, 42, 47, 20, 48. Give your answer to 2 decimal places

    Answer: 34.57

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