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Cornerstone · Grades 3–5 Keystones #1 25 February 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 25 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 33

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 3:1

    Answer: 24 and 8
  5. 5. Statistics Mean

    Find the mean of: 12, 16, 17

    Answer: 15

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