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

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

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

    Solve: 3x + 8 = 26

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

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 253 in the ratio 4:4:3

    Answer: 92, 92 and 69
  5. 5. Statistics Mean

    Calculate the mean of: 32, 17, 10, 49, 50, 31, 20, 20

    Answer: 28.6

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