(b) (Type an integer or a decimal.)

To express in decimal form, simply move the decimal point three places to the left. Thus, it becomes . So, the value to fill in the square is .

This number may seem small, but it’s a crucial part of the metric system! For instance, in scientific contexts, values expressed in powers of ten help simplify calculations, especially when dealing with incredibly large or tiny measurements like particles in chemistry or distances in astronomy.