\fdO'^ - Old Forge Coal Mines

ARITHMETIC. 71
(a) {a) 3 |/9'0 O'O 0'9 9. 4 O'O 9'0 = 3000.0165 -f- Ans.
3 (^) 9
(d) 60 (r) 00 99 40 09
600001
600 39400800
0_
6000
36000156
3400644
60000
0_
600000
1
600001
1_
6000020
6
6000026
Explanation.— Beginning at the decimal point we point
off the whole number into periods of two figures each, proceeding
from ri^/it to /e/t ; als^, point off the decimal into
periods of /wo figures each, proceeding from /c/i to right.
The largest number whose square is contained in the first
period, 9, is 3 ; hence, 3 is the first figure of the root. Place
3 al the left, as shown at («), and multiply it by the first figure
in the root, or 3. The result is 9. Write 9 under the
first period, 9, as at (^), subtract, and there is no remainder.
Bring down the next period, which is 00, as shown at (r).
Add the root already found to the 3 at (