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Cornerstone · Grades 3–5 Keystones #1 21 October 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 21 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 10

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

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 224 in the ratio 3:2:3

    Answer: 84, 56 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 27, 8, 41, 47, 8, 46, 14

    Answer: 27.3

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