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Cornerstone · Grades 3–5 Keystones #1 29 June 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 29 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x - 15 = 13

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 66 in the ratio 1:1:4

    Answer: 11, 11 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 44, 32, 7, 42, 27, 22, 45

    Answer: 31.3

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