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Cornerstone · Grades 3–5 Keystones #1 21 January 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x - 10 = 26

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 1:1:2

    Answer: 26, 26 and 52
  5. 5. Statistics Mean

    Find the mean of: 8, 15, 10

    Answer: 11

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