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Cornerstone · Grades 3–5 Keystones #1 21 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 21 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄7

    Answer: 19⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 27

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 308 in the ratio 4:3:4

    Answer: 112, 84 and 112
  5. 5. Statistics Mean

    Find the mean of: 2, 20, 19, 7

    Answer: 12

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