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Cornerstone · Grades 3–5 Keystones #1 26 September 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 26 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 22

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 2:1:2

    Answer: 80, 40 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 10, 6, 11, 26, 10, 21, 8

    Answer: 13.1

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