Final answer:
The metric system, US Customary system, and household system are three measurement systems commonly used for different purposes.
Explanation:
The three systems of measurement commonly used are the metric system, US Customary system, and household system.
In the metric system, measurements are based on decimals or powers of 10, ensuring reproducibility and ease of measurement. Scientists use the International System of Units (SI), a refined version of the metric system, for accurate and consistent measurements.
While the United States uses the US Customary system for everyday measurements, scientists and most countries worldwide rely on the metric system due to its standardization and global adoption.
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