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Cornerstone · Grades 3–5 Keystones #1 30 August 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 30 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 68

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Divide 65 in the ratio 1:1:3

    Answer: 13, 13 and 39
  5. 5. Statistics Mean

    Find the mean of: 1, 14, 3, 6

    Answer: 6

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