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

Five GCSE retrieval questions · 1 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 6⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 38

    Answer: x = 11
  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 180 in the ratio 1:4:1

    Answer: 30, 120 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 36, 14, 12, 20, 41, 32, 50, 24

    Answer: 28.6

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