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Cornerstone · Grades 3–5 Keystones #1 11 August 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 67

    Answer: x = 9
  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

    Divide 66 in the ratio 4:1:1

    Answer: 44, 11 and 11
  5. 5. Statistics Mean

    Find the mean of: 10, 18, 17

    Answer: 15

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