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Cornerstone · Grades 3–5 Keystones #1 14 October 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 14 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 3⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 16 = 2

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 4cm

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

    Divide 114 in the ratio 1:4:1

    Answer: 19, 76 and 19
  5. 5. Statistics Mean

    Find the mean of: 16, 3, 3, 11, 18

    Answer: 10.2

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