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Cornerstone · Grades 3–5 Keystones #1 9 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 4⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x - 11 = 19

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 102 in the ratio 2:3:1

    Answer: 34, 51 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 40, 12, 14, 44, 32, 18, 21. Give your answer to 2 decimal places

    Answer: 25.86

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