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Cornerstone · Grades 3–5 Keystones #1 21 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 21 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 6⁄8

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 8 = 17

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

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 4:4:3

    Answer: 56, 56 and 42
  5. 5. Statistics Mean

    Find the mean of: 13, 10, 7, 2

    Answer: 8

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