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Cornerstone · Grades 3–5 Keystones #1 11 October 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 5⁄7

    Answer: 41⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x + 6 = 60

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 4:3

    Answer: 24 and 18
  5. 5. Statistics Mean

    Find the mean of: 18, 3, 11, 4

    Answer: 9

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