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Cornerstone · Grades 3–5 Keystones #1 30 March 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 30 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄5

    Answer: 48⁄35
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 33

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 30, 13, 42, 6, 39, 16, 26, 5. Give your answer to 2 decimal places

    Answer: 22.13

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