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2184                                                             ARITHMETIC

Weight (Avoirdupois). 16 ounces (oz.)=l pound (Ib.) 100 pounds = 1 hundredweight

(cwt.)

2000 pounds = 1 ton (T.) 2240 pounds = 1 long ton (L. T.) 60 pounds = 1 bushel wheat or potatoes.

196 pounds = 1 barrel flour. 200 pounds = 1 barrel pork or

beef.

Circular.

60 seconds (") =1 minute (')

60 minutes = 1 degree (°) 360 degrees = 1 circumference.

EXEECISE 25.

The following problems will help fix the tables in the mind. In performing a problem imagine yourself to be one of the parties in every transaction.

1.   Change 26  quarts to bushels and pecks. Find the number of quarts in 3 bu., 3 pk., 3 qt.

2.   Reduce 3 acres to square feet.

3.   How many reams of paper are there in 6720 sheets?

4.   Change 62,208 cu, in. to cu. yd.

5.   A man bought 5 acres of land at $172 per acre, and sold it at 23c per sq. ft. What was his gain!

6.   What must be paid for a pile of wood 25 ft. long, 4 ft. high, and 4 ft. wide, at $5.75 per cord!

7.   Find the entire surface of a block of marble 10 ft. long, 2% ft. wide, and 1% ft. thick.

8.   What will 5 bu. 3 pk. of potatoes cost at $1.15 per bushel?

9.   How many gallons of water are there in a tank 3 ft. square, if the water is 4 ft. 4 in. deep!

10.   A man paid $385 for 77 cords of wood. He sold the following lots:  12y2 cd., 18 cd., and 14% cd., all at $5.25 per cd. What did he gain on what he sold?

Time.

60 seconds (sec.)=l minute

(min.)

60 minutes = 1 hour (hr.) 24 hours = 1 day (da.) 7 days = l week (wk.)

365   days = l   common   year

(yr.)

366 days = 1 leap year.

12 months (mo.) =1 year. 100 years == 1 century