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Cornerstone · Grades 3–5 Keystones #1 24 September 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 24 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x + 5 = 35

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

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 119 in the ratio 1:2:4

    Answer: 17, 34 and 68
  5. 5. Statistics Mean

    Find the mean of: 6, 20, 8, 14

    Answer: 12

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