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Cornerstone · Grades 3–5 Keystones #1 1 November 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 4⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 29

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 330 in the ratio 4:4:3

    Answer: 120, 120 and 90
  5. 5. Statistics Mean

    Find the mean of: 5, 14, 2, 18, 7

    Answer: 9.2

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