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Cornerstone · Grades 3–5 Keystones #1 20 July 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 20 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 5⁄8

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 1

    Answer: x = 5
  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 184 in the ratio 1:3:4

    Answer: 23, 69 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 9, 28, 23, 47, 16, 42, 5. Give your answer to 2 decimal places

    Answer: 24.29

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