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Cornerstone · Grades 3–5 Keystones #1 7 November 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 7 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 1⁄12

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = 9

    Answer: x = 14
  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 144 in the ratio 4:2:3

    Answer: 64, 32 and 48
  5. 5. Statistics Mean

    Find the mean of: 6, 8, 3, 13

    Answer: 7.5

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