Sam and his father are building a birdhouse and need to calculate the wood required for its walls. Sam initially multiplies incorrectly, resulting in confusion about decimal placement. The video explains two strategies to correctly place the decimal: estimation and counting digits. Estimation involves rounding numbers to simplify calculations, while counting digits involves identifying the total digits to the right of the decimal in both factors. Both methods lead to the correct result of 27 inches of wood needed. The lesson concludes by summarizing these strategies for accurate decimal placement.

How many inches of wood do Sam and his father need for the walls of the birdhouse?

What two methods did Sam learn to place the decimal point correctly?