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Cornerstone · Grades 3–5 Keystones #1 15 June 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 5⁄7

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

    Solve: 8x - 14 = 26

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

    Calculate the hypotenuse when a = 4cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 121 in the ratio 4:3:4

    Answer: 44, 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 23, 46, 49, 11, 27, 13. Give your answer to 2 decimal places

    Answer: 28.17

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