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

Five GCSE retrieval questions · 1 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 3⁄9

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

    Solve: 7x - 5 = 79

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Find the mean of: 19, 3, 8

    Answer: 10

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