(Amounts in millions, except per share amounts)

2011

2010

2009

Numerator:

Net income attributable to 3M

$

4,283

$

4,085

$

3,193

Denominator:

Denominator for weighted average 3M common shares outstanding — basic

708.5

713.7

700.5

Dilution associated with the Company’s stock-based compensation plans

10.5

11.8

6.2

Denominator for weighted average 3M common shares outstanding — diluted

719.0

725.5

706.7

Earnings per share attributable to 3M common shareholders — basic

$

6.05

$

5.72

$

4.56

Earnings per share attributable to 3M common shareholders — diluted

$

5.96

$

5.63

$

4.52