10. At $1 a day, how much will a boy earn in 14 days? 11. If a motorman receives 20 an hour, what is his pay for 6 days of 9 hours each?

12. A clerk pays $4.50 a week for board. How much will his board cost him for September, October, and November? 13. At the rate of $2 a day, how much can a boy earn during the month of February?

The teacher should bring into the class a yard stick and a 50-foot measuring line. Each pupil should be provided with a 12-inch ruler, with inches and half inches clearly marked.

1. Measure the length of a book; of a desk; of a table. 2. Measure the yard stick with the ruler.

How many

feet equal a yard? A foot is what part of a yard?

3. With the measuring line mark off 16 ft., or 1 rod, on the blackboard.

4. How many yards are there in 163 ft.? in 320 rd.?

1. How much will 1 gross buttons cost at 15 a dozen? 2. A stationer bought 12 quires of paper for $1.20 and sold it at a cent a sheet. How much did he gain?

3. Find the cost of 40 lemons at 15¢ a dozen.

REVIEW

1. A bicycle wheel is 7 feet 4 inches in circumference. How many turns will it make in going 6 miles ?

2. How much will 31 bushels of plums cost at 9 a quart? 3. How much fence will be needed to inclose a square field, each side of which is 22 rods?

4. If 9 boxes weigh 27 pounds, how much will 36 boxes weigh? How much will 3 boxes weigh?

5. George has a can of milk containing 10 gallons. If he sells 10 quarts to his first customer, 4 quarts to the second customer, 3 gallons to the third customer, and 2 gallons 1 pint to the fourth, how much has he left in the can?

6. How much are 5 miles of telegraph wire worth at $0.005 a foot?

7. Our grocer found that 9 hams weighed 827 pounds. What was the average weight?

8. How much must be paid for 15 gross of lead pencils at 35 a dozen?

9. Walter picked 44 bushels of blackberries and sold them to a grocer for 6 a quart. He took in exchange eggs at 24 ¢ a dozen. How many dozen did he receive?

10. A butcher sold 30 pounds of lard at $0.12 a pound, and purchased with the money flour at $0.03 per pound. How much flour did he buy?

11. 500 bushels of peaches were packed in baskets, each holding 2 pecks. How many baskets were needed?

12. 20 hundredweight of starch was packed into boxes, each containing 5 pounds. How much was received, if each box was sold for 61?

13. Count the change from a five-dollar bill for 8 pounds of steak at 18 a pound, 3 cans of tomatoes at 96¢ a dozen, and 2 gallons of gasoline at 15¢ a gallon.

14. What is my January milk bill, if I use 5 pints every day, at 8 a quart ?

15. If ğ of a ton of coal costs $3.75, how much will 31⁄2 tons cost?

16. How many pint cans can be filled from 26 gallons of tomato soup?

17. The Bell Telephone Co. charges me $40 a year for 600 calls. How much is that per month? how much for each of the calls?

18. Find the amount of the following sales:

1 dozen boxes of cocoa at 15 a box,

8 cans of tomatoes at $1 a dozen,

3 boxes of figs at $3 a dozen,

111⁄2 pounds turkey at 22 ¢ a pound.

19. Five girls weigh 75 pounds, 86 pounds, 93 pounds, 69 pounds, and 72 pounds respectively. What is their average weight?

20. There are 20 quires in a ream. At $1.20 a ream, find the cost of 3 reams, 3 quires of paper.

21. How old is a man who is threescore years and ten? 22. The Adams Coal Company sold 8 loads of coal as follows: 2470 lb., 3680 lb., 1974 lb., 2985 lb., 1741 lb., 3164 lb., 3749 lb., and 4278 lb. Find the number cf tons, hundredweight, and pounds sold.

PRACTICAL MEASUREMENTS

LENGTHS AND SURFACES

Lines that meet, making a square corner, form a right angle.

A figure that has four straight sides and four right angles is called a rectangle.

A rectangle having its four sides equal is called a square. Rectangles that are not squares are sometimes called oblongs.

The perimeter is the distance around a surface.

What is meant by drawing a surface on a scale of 1 inch to 2 feet? On what scale is this surface drawn?

The area of a rectangle is a number of square units equal to the product of its two dimensions when expressed in like units.

Thus, if the dimensions of a rectangle are 2 inches and 4 inches, the area is 8 square inches; if the dimensions are 2 feet and 4 feet, the area is 8 square feet.