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Cornerstone · Grades 3–5 Keystones #1 21 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄6

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

    Solve: 2x + 7 = 25

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.56cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 1:1:2

    Answer: 28, 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 14, 2, 7, 9

    Answer: 8

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