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Cornerstone · Grades 3–5 Keystones #1 11 January 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 11 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 2⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 24

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:2:3

    Answer: 10, 20 and 30
  5. 5. Statistics Mean

    Find the mean of: 6, 10, 19

    Answer: 11.666666666667

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