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Cornerstone · Grades 3–5 Keystones #1 6 December 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 6 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 1⁄10

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

    Solve: 4x + 8 = 44

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 1:4:1

    Answer: 22, 88 and 22
  5. 5. Statistics Mean

    Find the mean of: 13, 5, 18

    Answer: 12

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