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Cornerstone · Grades 3–5 Keystones #1 9 July 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄4

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 9 = 57

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 2:1:3

    Answer: 44, 22 and 66
  5. 5. Statistics Mean

    Calculate the mean of: 14, 39, 36, 30, 20, 31, 23, 37

    Answer: 28.75

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