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Cornerstone · Grades 3–5 Keystones #1 17 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 3⁄8

    Answer: 53⁄56
  2. 2. Algebra Two-step equations

    Solve: 2x + 15 = 25

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

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Divide 290 in the ratio 4:3:3

    Answer: 116, 87 and 87
  5. 5. Statistics Mean

    Calculate the mean of: 40, 47, 28, 38, 38, 49, 9. Give your answer to 2 decimal places

    Answer: 35.57

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