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Cornerstone · Grades 3–5 Keystones #1 21 April 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 2⁄7

    Answer: 23⁄56
  2. 2. Algebra Two-step equations

    Solve: 2x + 15 = 23

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 250 in the ratio 3:3:4

    Answer: 75, 75 and 100
  5. 5. Statistics Mean

    Calculate the mean of: 16, 6, 35, 12, 43, 33, 23, 17. Give your answer to 2 decimal places

    Answer: 23.13

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