Exhibit 5(b)

EXHIBIT A

This EXHIBIT A, dated as of September 21, 2012, is Exhibit A to that certain Distribution Agreement dated as of October 1, 2008, between BlackRock Funds^SM and BlackRock Investments, Inc. (now BlackRock Investments, LLC)

BlackRock Funds

BlackRock All-Cap Energy & Resources Portfolio

BlackRock China Fund

BlackRock Commodity Strategies Fund

BlackRock Energy & Resources Portfolio

BlackRock Emerging Markets Long/Short Equity Fund

BlackRock Flexible Equity Fund

BlackRock Global Long/Short Credit Fund

BlackRock Global Long/Short Equity Fund

BlackRock Global Opportunities Portfolio

BlackRock Global Science & Technology Opportunities Portfolio

BlackRock Health Sciences Opportunities Portfolio

BlackRock Index Equity Portfolio

BlackRock India Fund

BlackRock International Opportunities Portfolio

BlackRock Managed Volatility Portfolio

BlackRock Mid-Cap Growth Equity Portfolio

BlackRock Money Market Portfolio

BlackRock Multi-Asset Real Return Fund

BlackRock Municipal Money Market Portfolio

BlackRock New Jersey Municipal Money Market Portfolio

BlackRock North Carolina Municipal Money Market Portfolio

BlackRock Ohio Municipal Money Market Portfolio

BlackRock Pennsylvania Municipal Money Market Portfolio

BlackRock Real Estate Securities Fund

BlackRock Short Obligations Fund

BlackRock Short-Term Treasury Fund

BlackRock Small Cap Growth Equity Portfolio

BlackRock Strategic Risk Allocation Fund

BlackRock U.S. Opportunities Portfolio

BlackRock U.S. Treasury Money Market Portfolio

BlackRock Ultra-Short Obligations Fund

BlackRock Virginia Municipal Money Market Portfolio

BlackRock World Gold Fund