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Cornerstone · Grades 3–5 Keystones #1 15 July 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 1⁄5

    Answer: 33⁄40
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 48

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 68 in the ratio 1:1:2

    Answer: 17, 17 and 34
  5. 5. Statistics Mean

    Find the mean of: 16, 10, 19

    Answer: 15

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