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Cornerstone · Grades 3–5 Keystones #1 4 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 5

    Answer: x = 4
  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 55 in the ratio 4:1

    Answer: 44 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 40, 9, 21, 30, 23, 41, 42, 36

    Answer: 30.25

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