These decimals worksheets grade four learning all about parts of the whole. Students have begun to learn about fractions and decimals, which are different ways to show numbers that aren't whole numbers. Decimals, such as 1.25 and .75, when added together, equal 2. However, to do this, they need to be lined up with the decimal points in line in order to add the numbers correctly. Students will practice working with problems similar to this and learning how to add them together.