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

  1. 1. Number Adding fractions

    Add: 2⁄4 + 3⁄6

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 26

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 2:2:3

    Answer: 38, 38 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 8, 23, 21, 16, 24, 19, 50

    Answer: 23

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