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Cornerstone · Grades 3–5 Keystones #1 14 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 14 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄4

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

    Solve: 4x + 11 = 23

    Answer: x = 3
  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 125 in the ratio 1:3:1

    Answer: 25, 75 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 23, 9, 34, 20, 49, 41. Give your answer to 2 decimal places

    Answer: 29.33

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