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Cornerstone · Grades 3–5 Keystones #1 6 April 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 6⁄7

    Answer: 45⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 38

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 4:3:3

    Answer: 52, 39 and 39
  5. 5. Statistics Mean

    Find the mean of: 14, 17, 4, 11, 19

    Answer: 13

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