Visual models provide a concrete representation of decimals, making it easier to compare their values. By representing each decimal as a fraction or drawing them on a number line, you can visually see which decimal is greater or smaller.
Lining up decimals correctly is crucial because it ensures that corresponding place values are being compared accurately. When comparing decimals digit by digit, it's essential to align them along the decimal point so that you're comparing the same place values.
To order a set of decimal numbers, you can use the place value method. Start by comparing the whole number parts and then move on to the tenths, hundredths, and so on. Arrange the decimals in ascending or descending order based on their values in each place value position.