Explain why 0.2 and 0.020 are not equivalent?

0.2 and 0.020 are not equivalent because the number of decimal places matters in decimal numbers. In 0.2, there is one decimal place, while in 0.020, there are three decimal places. The extra zero in 0.020 signifies a smaller value compared to 0.2. Therefore, 0.2 is equivalent to 0.200, not 0.020.