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Cornerstone · Grades 3–5 Keystones #1 26 June 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 26 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

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

    Solve: 8x - 10 = 38

    Answer: x = 6
  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 84 in the ratio 1:4:2

    Answer: 12, 48 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 28, 35, 25, 17, 5, 13, 11

    Answer: 19.1

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