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Cornerstone · Grades 3–5 Keystones #1 15 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 15 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 2⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 13

    Answer: x = 8
  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 319 in the ratio 4:3:4

    Answer: 116, 87 and 116
  5. 5. Statistics Mean

    Find the mean of: 6, 16, 11, 10, 17

    Answer: 12

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