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Cornerstone · Grades 3–5 Keystones #1 15 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 4⁄6

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 62

    Answer: x = 8
  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

    Divide 280 in the ratio 2:1:2

    Answer: 112, 56 and 112
  5. 5. Statistics Mean

    Find the mean of: 16, 14, 15

    Answer: 15

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