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Cornerstone · Grades 3–5 Keystones #1 9 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 3

    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 126 in the ratio 3:2:1

    Answer: 63, 42 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 34, 41, 44, 5, 21, 37. Give your answer to 2 decimal places

    Answer: 30.33

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