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Cornerstone · Grades 3–5 Keystones #1 10 April 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄6

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 72

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 4:3

    Answer: 48 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 39, 43, 24, 6, 19, 15, 50

    Answer: 28

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