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Cornerstone · Grades 3–5 Keystones #1 30 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 71

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 3:3:2

    Answer: 42, 42 and 28
  5. 5. Statistics Mean

    Find the mean of: 15, 2, 11, 10, 19

    Answer: 11.4

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