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Cornerstone · Grades 3–5 Keystones #1 24 March 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 24 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 24

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

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 2:3:2

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

    Calculate the mean of: 35, 32, 38, 38, 22, 9, 31. Give your answer to 2 decimal places

    Answer: 29.29

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