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Which expression will give a better estimate of $21.2 \div 5$?$\newline$Choices:$\newline$(A) $20 \div 5$$\newline$(B) $25 \div 5$$\newline$Use the expression you picked to estimate the quotient.$\newline$$21.2 \div 5$ is about $\newline$$\underline{\hspace{2cm}}$.