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Cornerstone · Grades 3–5 Keystones #1 20 December 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄7

    Answer: 33⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 1

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Divide 154 in the ratio 3:4:4

    Answer: 42, 56 and 56
  5. 5. Statistics Mean

    Find the mean of: 15, 5, 10, 15, 5

    Answer: 10

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