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Cornerstone · Grades 3–5 Keystones #1 19 February 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 19 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 17

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 2:3:3

    Answer: 50, 75 and 75
  5. 5. Statistics Mean

    Calculate the mean of: 15, 32, 14, 20, 16, 21. Give your answer to 2 decimal places

    Answer: 19.67

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