Estimate sums, products, quotients, and percent results, then judge whether an exact answer is reasonable.
Estimate a contextual total with a specified rounding rule
Problem
Maya plans to buy a notebook for \(\$6.79\), pens for \(\$4.25\), a water bottle for \(\$9.60\), and stickers for \(\$3.15\). She has a \(\$25\) gift card. Round each of the four prices to the nearest dollar, add the rounded prices, and decide whether the card should cover the purchase.
The question is whether an estimated purchase total stays within a fixed budget. We’ll round all four prices to the nearest dollar, add every rounded amount, and compare that estimate with the gift card value. That comparison tells us whether the card should be enough without requiring an exact total first.
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