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Cornerstone · Grades 3–5 Keystones #1 5 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄7

    Answer: 23⁄21
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 74

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 10, 19, 7

    Answer: 12

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