Compare, order, and estimate whole numbers and decimals using place value and magnitude sense.
Estimate in context by rounding
Problem
You are buying \(3\) snacks at a store. The prices are \(\$2.79\), \(\$4.15\), and \(\$3.62\). Round each price to the nearest dollar and use the rounded prices to estimate the total cost. Write an estimate, not the exact total.
Big Picture
What this problem is really about
This is an estimate, so the original prices are inputs to simplify before we add. We’ll round each price to the nearest whole dollar using the cents, then add only those rounded amounts. That produces a quick total at the precision the question asks for.
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