Add and Subtract Decimal Numbers

The video tutorial explains a real-life scenario of purchasing a birthday card and a magazine, totaling $8.34, and receiving $12.34 in change from a $20 bill. It demonstrates how to add decimal numbers by aligning place values and verifies the change received by subtracting the total cost from the amount given. The tutorial highlights the importance of aligning decimal points and borrowing in subtraction to ensure accurate calculations.

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