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Cornerstone · Grades 3–5 Keystones #1 2 April 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 6⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 10 = 62

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 3:2:3

    Answer: 72, 48 and 72
  5. 5. Statistics Mean

    Find the mean of: 13, 19, 18, 10

    Answer: 15

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