Page:LA2-NSRW-5-0156.jpg

Rh

Arithmetic is the study of numbers and their uses. Numbers are expressed by figures.

These figures are:

The figure zero is never read. It merely indicates that that order is omitted.

Numbers greater than 9 are expressed by writing two or more figures side by side.

Our system of numbers is based on the decimal system.

Every time we move a figure one place to the left of the decimal point, we multiply it by 10.

Every time we move a figure one place to the right of the decimal point, we divide it by 10.

Every three figures in any number, counting from the decimal point to the left, form a period.

Periods of figures are separated from each other by commas.

The names of the periods in order from the decimal point to the left are,

We very seldom use numbers above millions.