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Cornerstone · Grades 3–5 Keystones #1 29 November 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 29 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄5

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 54

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 2:2:1

    Answer: 52, 52 and 26
  5. 5. Statistics Mean

    Find the mean of: 17, 15, 20, 19, 16

    Answer: 17.4

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