Which number is bigger 0.5 or 0.12?

In comparing 0.5 and 0.12, we can consider their decimal representations. 0.5 is equivalent to 0.50, which is greater than 0.12. When comparing decimals, we look at the digits to the right of the decimal point. In this case, 0.50 is greater than 0.12 because 50 is greater than 12.