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Lesson Summary
• Knowledge of basic math skills is vital to accomplishing any plumbing task. These skills help plumbers to make precise calculations and install accurate systems.

• Measuring is basic to the plumbing profession and lies at the heart of many other trade skills as well. Simple math operations such as addition, subtraction, multiplication, division, percentage, fractions, and conversions enable plumbers to measure and calculate exact pipe lengths. It also helps them to order right quantities of material.

• Plumbers should also know the various parts of pipe fittings such as face, center, and back. When measuring pipes, these elements define the beginning and the ending points of the measurement.

• Center-to-center method is one way to calculate the length of a pipe.