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Cornerstone · Grades 3–5 Keystones #1 20 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

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

    Solve: 8x - 7 = 25

    Answer: x = 4
  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 84 in the ratio 3:4

    Answer: 36 and 48
  5. 5. Statistics Mean

    Find the mean of: 8, 9, 13

    Answer: 10

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