The pile of wood in the center of this picture is 8 ft. long, 4 ft. wide, and 4 ft. high. How many cubic feet does it contain?

In the forest, fuel wood for market is generally cut in 4-foot lengths like that in the picture, so that a pile 4 ft. high and 8 ft. long contains a cord of 128 cu. ft. The term cord, however, is often used to mean any pile of wood that is 8 ft. long and 4 ft. high, whatever may be the length of the sticks.

Hold your hand high enough to show the height of the pile of wood in the picture. Stand as many feet from the side of the room as the pile is long. Show with your hands the length of the sticks.

Written

1. A pile of 4-ft. wood 18 ft. long and 5 ft. high contains how many cords?

Using cancellation, find the number of cords in piles of 4-foot wood of the lengths and heights given below:

MEASURING SURFACES OF FLOORS AND WALLS

It is not worth while to consume time in elaborate computation to determine the quantity of paper needed for walls, or of carpet for floors. The exact quantity needed is impossible to determine before the work is done. One should, however, be able to measure approximately the surface to be covered and estimate roughly the quantity of material to be ordered.

1. What would a hardwood

floor in this room cost at 18¢ per square foot?

2. How many square yards of floor are there?

3. How much will the carpet for this floor cost if the carpet is 1 yd. wide and costs $1.20 a yard?

4. The work of laying costs 5é a yard and carpet paper to lay under the carpet costs 5¢ a

This is Lucy's room drawn to the scale of "to 1'.

square yard. What is the entire expense of carpeting the room?

5. What would be the cost of cleaning this carpet at 8¢ per square yard?

6. What is the expense of covering a kitchen floor 12 ft. X 13 ft. with inlaid linoleum at $1.40 per square yard, allowing 14 sq. yd. for waste in matching the pattern?

7. Find the cost of covering a porch floor 9 ft. by 30 ft. with plain cocoa matting 54 in. wide at 50¢ a square yard.

8. The living-room of a summer cottage is 17 ft. x 24 ft., and the floor is covered with plain grass matting 1 yd. wide, laid without waste. (Which way must the strips run?) Find the cost at 40¢ a yard.

MEASURING WALL SURFACES

1. The scale of this drawing is " 1'. Make a

=

drawing like this, using " for 1'. Cut it out and fold it on the dotted lines, making the model of a room.

Find an empty pasteboard box. Invert it,

to represent a room.

Cut open one corner

seam, and three seams around the bottom.

Then open it like this diagram.

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Ceiling

2. What is the entire length of the end and side walls? What is the height?

3. How many square feet are there in all the walls? 4. How many square feet are there in the ceiling?

5. How many square feet are there in the walls and ceiling together?

6. How many square yards are there in all?

7. What will it cost to lath and plaster this room at 35¢ a square yard, taking out 55 sq. yd. for openings?

8. (a) What will it cost to lath and plaster a room 15′ by 18' and 9' high at $.30 a square yard, allowing 10 sq. yd. for doors and windows? (b) What will it cost at $.28 a square yard, making no allowances?

9. Measure your schoolroom to the nearest foot, and estimate the cost of lathing and plastering it at 50¢ a square yard. Allow 3 sq. yd. for each door and window.

10. Estimate the cost of plastering other rooms in your school building and in your own house.

REVIEW AND PRACTICE

Oral

1. How many oranges will 50 cents buy at the rate of 3 for 10 cents?

2. of 18 is what part of 72?

What per cent of 72? 3. What will 15 bu. of potatoes cost if 7 bu. cost $61? (15 is how many times 7?)

4. At $15 a dozen, what will 84 chairs cost? (84 are how many dozen?)

5. 9 months are what part of a year?

6. I bought a peck of chestnuts for $1.60 and sold them at 10 cents a half pint. How much did I gain? What per cent of the cost did I gain?

7. 25 is what part of 75?

8. Multiply 7.635 by 10;

What per cent of 75? by 1000; by 100.

9. Divide 5.8 by 10; by 100; by 1000.

10. 36 lb. of coffee for $9 is at the rate of 12 lb. for how much? (12 lb. are what part of 36 lb.?)

11. A wagon was sold for $60, which was of the cost. What was the cost? How much was lost?

of the cost was lost?

What per cent

12. How much does Andrew make on 40 papers when he buys them at the rate of 4 for 3¢ and sells them at 2¢ apiece? (40 is how many times 4?)

13. What part ofis ? is what part of ?

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14. Find 20% of 300; 331% of 72; 16% of 60.

15. Sugar at $140 a ton is how much a pound?

16. A house was damaged $500 by fire. This was 10% of the cost. What was the cost?

17. 871% of the cost of Glen's bicycle was $28. What was the whole cost?

18. If 9 eggs cost 27 cents, what will 2 doz. cost?

Written

1. What will it cost to paint a ceiling 24 ft. long and 16 ft. wide, at 25 cents a square yard?

2. What is the length of one side of a square garden whose perimeter is 632 feet?

3. What will it cost at 65 cents a square yard to cover with matting a floor 21 ft. long and 15 ft. wide?

4. There are 5280 ft. in a mile. (a) If steel rails are 30 ft. long, how many are needed for 8 miles of street railroad track? (b) How many tons do they weigh if each foot weighs 90 lb.?

5. At the rate of 660 feet a minute, how many miles will a street car run in two hours? (Indicate and cancel.)

6. What is the cost, at $1.80 per rod, of a fence inclosing a rectangular field 50 rd. by 34 rd.?

7. Draw a line to represent 11⁄2 miles, letting the scale be 1" to 80 rd.

8. Draw a rectangular building lot 4 rd. by 8 rd., and put on the lot a house 44 ft. by 33 ft. and a barn 22 ft. square, using as a scale 1" to 22'.

9. Three barrels of extract of witch hazel are put up in pint bottles and sold for 20¢ a bottle. What is received for all of it?

10. A grocer bought 40 bbl. of cider at $3.50 a barrel, made it into vinegar, and sold it at 8¢ a quart. (a) How much did he gain? (b) What per cent of the cost did he gain?

11. Divide in the shortest way the product of 36, 40, 144, 8, and 160 by the product of 18, 272, and 6.

12. Mr. C. J. Hogan has laid for Mr. Henry Sumner a piece of Portland cement walk 50 ft. long and 5 ft. wide at 121¢ a square foot. Make out the bill and receipt it.