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Cornerstone · Grades 3–5 Keystones #1 14 February 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 14 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄4

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 23

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 2:1:1

    Answer: 80, 40 and 40
  5. 5. Statistics Mean

    Find the mean of: 11, 1, 19, 12, 17

    Answer: 12

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