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Cornerstone · Grades 3–5 Keystones #1 20 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 20 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 1⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 46

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 3:1:1

    Answer: 90, 30 and 30
  5. 5. Statistics Mean

    Find the mean of: 13, 19, 2, 14

    Answer: 12

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