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Cornerstone · Grades 3–5 Keystones #1 5 April 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

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

    Solve: 7x + 3 = 24

    Answer: x = 3
  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 180 in the ratio 4:2:3

    Answer: 80, 40 and 60
  5. 5. Statistics Mean

    Find the mean of: 11, 12, 10, 11

    Answer: 11

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