Express 0.1234 in expanded notation

0.1234 can be expressed in expanded notation as 0.1 + 0.02 + 0.003 + 0.0004. Each digit is represented by its value according to its position in the decimal, making it easy to see how the whole number is constructed from its parts!

Using expanded notation helps clarify how each digit contributes to the overall value, which is especially helpful in understanding decimal places and their significance in calculations or when teaching someone about numbers. So next time you see a decimal, give it the expanded treatment!