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Cornerstone · Grades 3–5 Keystones #1 23 February 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 23 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄4

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 17

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

    Calculate the hypotenuse when a = 11cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:2:1

    Answer: 42, 84 and 42
  5. 5. Statistics Mean

    Find the mean of: 3, 14, 23, 4

    Answer: 11

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