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Cornerstone · Grades 3–5 Keystones #1 26 July 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 26 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 25

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 2:1

    Answer: 72 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 17, 9, 17, 50, 5, 24, 23

    Answer: 20.7

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