the comma is tenths, the second hundredths, and the third thousandths, we may read it, 3 tenths, 8 hun- dredths, and two thousandths of an inch ; but the for- mer way is preferable.*
In Addition and Subtraction, columns of the same name should be placed under each other, and the cal- culation made as if there were no decimal fractions. The following examples will show the use of this rule.
Addition. Subtraction. 432,178 324,15 30,4 17,231 187,3 19,28 9,4 - 83,502 136,85 11,12 7,08 549,391 Add the following sums : 36,075 8,1 4,44 9,6 28,04 8,176 345,56 686,008 . 0,43 86,115 5,16 10,08 6,8 82,686 2,5
Subtract the following : 68,06 4,85 15,908
17,67 3,9 12,819
The master or monitor may vary such sums at pleasure.
- After thousandths, come ten thousandths, hundred thousandths, mil-
Konths, &c. but for ordinary uses we seldom come down to so small a fraction.
