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Cornerstone · Grades 3–5 Keystones #1 17 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 3⁄8

    Answer: 61⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 37

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

    Calculate the hypotenuse when a = 10cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 33, 17, 46, 10, 43, 44, 18, 34. Give your answer to 2 decimal places

    Answer: 30.63

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