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Cornerstone · Grades 3–5 Keystones #1 30 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 4⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 85

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 3:4:1

    Answer: 33, 44 and 11
  5. 5. Statistics Mean

    Find the mean of: 13, 10, 13

    Answer: 12

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