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

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄8

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 7 = 15

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 232 in the ratio 3:2:3

    Answer: 87, 58 and 87
  5. 5. Statistics Mean

    Calculate the mean of: 9, 12, 16, 15, 25, 24, 47, 37. Give your answer to 2 decimal places

    Answer: 23.13

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