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Cornerstone · Grades 3–5 Keystones #1 22 June 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄5

    Answer: 17⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x + 10 = 87

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 2, 6, 10, 5, 2

    Answer: 5

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