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Estimate the product by first rounding each number to the highest place value. 2.49 X 420.2

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Given the expression:


2.49\text{ x }420.2

first let's roud to the highest place value each term:


\begin{gathered} 2.49\approx2.5\approx3 \\ 420.2\approx420\approx400 \\ \end{gathered}

then, an estimate product is:


3\cdot400=1200

which is close to the original product:


2.49\cdot420.2=1046.3

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