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If we add \(0.8\) and \(0.7\), we first ensure that the decimals are lined up correctly. When you do the math, \(0.8 + 0.7\) equals \(1.5\). It's always good to double-check your addition, especially when dealing with decimals; a small slip can lead to a jumbled outcome! In practical terms, understanding how to add decimals can be super useful! Imagine you're splitting a bill at a restaurant. If your meal cost \(0.8\) of the total and your friend's cost \(0.7\), knowing that together you spent \(1.5\) allows you to settle up and enjoy that dessert without worries!