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Cornerstone · Grades 3–5 Keystones #1 28 April 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 28 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

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

    Solve: 2x - 11 = 1

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 4:1:1

    Answer: 72, 18 and 18
  5. 5. Statistics Mean

    Find the mean of: 13, 15, 6, 15, 16

    Answer: 13

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