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Cornerstone · Grades 3–5 Keystones #1 5 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 17

    Answer: x = 6
  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

    Share 85 in the ratio 4:1

    Answer: 68 and 17
  5. 5. Statistics Mean

    Find the mean of: 13, 11, 3

    Answer: 9

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