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Cornerstone · Grades 3–5 Keystones #1 3 January 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 2⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 38

    Answer: x = 6
  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 60 in the ratio 1:4:1

    Answer: 10, 40 and 10
  5. 5. Statistics Mean

    Find the mean of: 2, 19, 3

    Answer: 8

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