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Cornerstone · Grades 3–5 Keystones #1 31 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄6

    Answer: 11⁄30
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 35

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

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 1:1:3

    Answer: 30, 30 and 90
  5. 5. Statistics Mean

    Calculate the mean of: 38, 43, 43, 35, 13, 22. Give your answer to 2 decimal places

    Answer: 32.33

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