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

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 57

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 11cm

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:1:1

    Answer: 72, 24 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 30, 41, 7, 38, 7, 19

    Answer: 23.7

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