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Cornerstone · Grades 3–5 Keystones #1 26 January 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 26 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 2⁄5

    Answer: 21⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 51

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 1:1:2

    Answer: 50, 50 and 100
  5. 5. Statistics Mean

    Find the mean of: 20, 11, 6, 11

    Answer: 12

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