11728 scruples.
20

Ans. 234567 grains.

OPERATION.

20) 2 3 4 5 6 7 gr.
3) 11728 sc. 7gr.

8) 3909 dr. 1sc.

12) 488 oz. 5dr.

40 lb. 8oz.

Ans. 40lb. 8oz. 5dr. 1sc. 7gr.

3. How many scruples in 76lb. ?
4. How many pounds in 21888 ?
5. How many grains in 144lb. ?
6. How many pounds in 829440gr. ?

7. In 12tb 83 33 19 18gr. how many grains?

8. In 73178 grains how many pounds?

9. How many doses are there in 73 63 29 of tartar emetic, admitting 20 grains for each dose?

AVOIRDUPOIS WEIGHT.

Ans. 188.

ART. 89. Avoirdupois Weight is used in weighing almost every kind of goods, and all metals except gold and silver.

QUESTIONS.-How do you reduce pounds to grains? What is the reason for the operation? How do you reduce grains to pounds? Give the reason of the operation. Art. 89. For what is avoirdupois weight used? Recite

the table.

NOTE. By a late law of Massachusetts, the cwt. contains 100lb., instead of 112lb., and 25lb. are considered a quarter of a cwt. in most of the United States, except at the custom-houses, where gross weight is used in collecting duties.

MENTAL EXERCISES.

1. How many drams in 3oz.? In 7oz.? In 10oz.? In 12oz.? 2. How many ounces in 10lb.? In 15lb.? In 12lb. ? In 100lb. ? 3. How many pounds in 2 quarters? In 3qr.? In 20qr.? 4. How many quarters in 10cwt.? In 16cwt.? In 17cwt.? 5. How many tons in 80cwt. ? In 100cwt.? In 600cwt.? 6. How many hundred weight in 16qr.? In 48qr.? In 96qr.? 7. How many quarters in 56 pounds? In 140lb.? In 196lb.?

EXERCISES FOR THE SLATE.

1. How many pounds in 176T. 17cwt. 3qr. 15lb.?

OPERATION.

176 T. 17cwt. 3qr. 15lb.
20

3537 hundred weight.
4

2. In 396243lb., how many tons?

OPERATION.

28) 39 6243 lb.

4) 14151 qr. 15lb.

20) 3537 cwt. 3qr.

176 T. 17cwt.

14151 quarters.

28

Ans. 176T. 17cwt. 3qr. 15lb.

113213

28303

Ans. 39 6243 pounds.

3. In 16T. 19cwt. Oqr. 10lb. 11oz. 5dr. how many drams? 4. In 9722549 drams how many tons?

5. In 679cwt. how many pounds?

6. In 76048lb. how many cwt. ?

7. What cost 17cwt. 3qr. 18lb. of beef, at 7 cents per pound?

Ans. $.140.42.

8. What cost 48T. 17cwt. of lead, at 8 cents per pound? Ans. $8753.92.

QUESTIONS. How many pounds are now allowed for a cwt., and how many for a quarter of a cwt., in most of the United States, in buying and selling articles by weight? How many at the custom-houses? reduce tons to drams? Give the reason for the operation. reduce drams to tons? What is the reason for the operation?

How do you
How do you

CLOTH MEASURE.

ART. 90. Cloth Measure is used in measuring cloth, ribbons, lace, and other articles sold by the yard or ell.

In 8qr.? In

In 7yd.? In Syd.?

1. In 2 quarters how many nails? In 5qr.? 20qr. In 25qr.? In 30qr.? In 40qr.? 2. In 3 yards how many quarters? In 14yd.? In 19yd.? In 100yd.? In 200yd. ? 3. How many quarters in 8 nails? 4. How many yards in 20 quarters? In 40 qr.?

In 20na. ?

In 48na. ?

In 100qr.?

2. In 765 nails how many yards?

OPERATION.

4) 7 6 5 na.

4) 19 1 qr. Ina.

Ans. 47 yd. 3qr. Ina.

QUESTIONS. Art. 90. For what is cloth measure used? Repeat the table. Is the ell French now in use? How do you reduce yards to nails? Give the reason for the operation. How do you reduce nails to yards? What is the reason for the operation?

3. In 144yd. 3qr. how many quarters ?
4. In 579 quarters how many yards?
5. In 17 E. E. 4qr. 3na. how many nails?
6. In 359 nails how many ells English?
7. In 126yd. Oqr. 3na. how many nails?
8. In 2019 nails how many yards?

9. What cost 49yd. 3qr. of cloth, at $2.17 per quarter of a yard?

10. What cost 144yd. 1qr. 3na. of cloth, at 25 cents per nail?

LONG MEASURE.

ART. 91. Long Measure is used in measuring distances, or where length is required without regard to breadth or depth.

1. How

MENTAL EXercises.

many inches in 4 feet? In 10ft.? In 12ft.? In 20ft.? 2. How many feet in 2 yards?,In 5yd.? In 20yd.? In 18yd.? 3. How many rods in 2 furlongs? In 8fur.? In 1fur.? In 30fur.? In 100fur.? In 200fur.? In 400fur.?

4. How many leagues in 9 miles? In 21m.? In 81m.? In 144m.? In 40m.? In 50m.? In 80m. ?

5. How many furlongs in 120 rods? In 360rd.? In 1440rd.? 6. How many yards in 99 feet? In 66ft.? In 144ft. ? 7. How many feet in 108 inches? In 144in. ? In 1728in.?

QUESTIONS. Art. 91. For what is long measure used? Repeat the table.

EXERCISES FOR THE SLATE.

1. In 87deg. 56m. 7fur. 37rd. 12ft. 9in. how many inches?

386717319 in. Ans. 87deg. 56m. 4fur. 37rd 12ft. 6in.

NOTE. To multiply by, we take of the multiplicand. - To divide by 16, we first reduce both the divisor and dividend to halves, and then divide, and the remainder being 25 half-feet, we take half of it for the true remainder = 12ft. 6in. We adopt the same principle in dividing by 69; the remainder being 113 half-miles, we divide them by 2, and the quotient is 56 miles 4 furlongs. By adding the 3 inches to the 6 inches, and the 3 furlongs to the 4 furlongs, we obtain the

true answer.

3. In 47 miles how many feet?

4 In 248160 feet how many miles?

5. In 78deg. 50m. 7fur. 30rd. 5yd. 2ft. 10in. how many inches?

6. How many degrees in 346704154 inches?

QUESTIONS.-How do you reduce degrees to inches? Give the reason of the operation. How do you reduce inches to degrees? What is the reason for the operation? How do you multiply by ? How do you divide by 16 and find the true remainder? How do you obtain the true answer in examples of this kind?