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Cornerstone · Grades 3–5 Keystones #1 27 March 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 27 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 3⁄6

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 62

    Answer: x = 8
  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

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 24, 10, 4, 18

    Answer: 14

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