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Cornerstone · Grades 3–5 Keystones #1 17 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 17 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 5 = 41

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

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 2:3:4

    Answer: 24, 36 and 48
  5. 5. Statistics Mean

    Find the mean of: 8, 17, 10

    Answer: 11.666666666667

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