There are different categories of numbers that we use every day.
Integers that written in decimal notation have $1, 2$ or $5$ as the leading figure, followed by none, one or more zeros. These are very common numbers, e.g. used in Bank notes: $1, 2, 5, 10, 50, 200, 1000, ....$
Other intergers, which are less common, e.g. your (approximated) height in $cm$, the (approximate) temperature of your body or the environment, or the (approximate) result of converting $200$ miles to kilometers.
Numbers that are not integers, such as $\$1.23$.
If you have $\$198$ (category $2$) bill in a restaurant, you'd probably tip $\$2$ to round it to $\$200$ (category $1$).
Is there a term for numbers of category $1$?