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

Five GCSE retrieval questions · 5 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

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

    Solve: 2x + 3 = 23

    Answer: x = 10
  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 176 in the ratio 3:2:3

    Answer: 66, 44 and 66
  5. 5. Statistics Mean

    Find the mean of: 16, 17, 7, 4

    Answer: 11

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