12. A load of gether 2950 lb.

hay and the wagon weigh toThe wagon weighs 1145 lb.

What is the weight of the hay? How much does the hay lack of weighing a ton?

Multipliers 10, 20, etc.

295. 1. Multiply 18 by 20.

PROCESS

18

20

360

placing the 2 in the multiplier under the

ones' place in the multiplicand.

20 2 tens.

20 × 18 is the same as

2 tens x 18 = 36 tens or 360.

A short method of multiplying by 20 is to multiply by 2 and annex the 0 to the product.

Give the short method of multiplying by 30.

3. Multiply 264 by 400.

PROCESS

264

EXPLANATION. Arrange the num

bers, placing the 4 in the multiplier 400 under the ones' place in the multipli

105,600 cand. Write the explanation.

Give the short method of multiplying by num

bers that end in one cipher or two ciphers.

37 10)370

1 ten is contained in 37 tens 37 times. 37 is the quotient.

A short method of dividing a number that ends with a 0 by 10 is to strike out or cancel the O at the right of the divisor and the dividend, and divide the resulting numbers.

298.

1. 10)480

2. 10)1,850 3. 10)6,230 4. 10)3,470 5. 10)5,460 6. 10)1,050 7. 10)3,070 8. 10)8,090

9. 10)7,060 10. 10)6,070 11. 20)780 12. 20)8,060 13. 30)6,390 14. 40)4,640 15. 50)7,050 16. 60)7,260 17. 70)4,970 18. 80)5,680 19. 9)8,190 20. 9)1,890

7. 80)467,540 8. 60)823,560 9. 50)35,240

10. 70)73,230 11. 80)765,440 12. 90)563,280

Written Problems

301. 1. What is the cost of 100 T. of hay at $16 a ton?

2. A bushel of wheat weighs 60 lb. What is the weight of a load of wheat which contains 54 bu.? 3. A train travels at the rate of 50 mi. an hour. How far does it travel in 12 hr. ? In 24 hr.?

4. What is the cost of 20 lb. of salmon at 13¢ a pound?

5. If trout costs 20 a pound, what will 11 lb.

cost?

6. Halibut sells for 15 a pound. What must you pay for 30 lb. ?

BILLS AND RECEIPTS

302. 1. A photographer sold a kodak for $15, a carrying case for $1.25, and 6 rolls of films for 35 each. What was the amount of the sale?

2. A dealer sold a suit case for $7.50, a trunk for $12 and a harness for $16.50. How much did he receive in payment?

3. A merchant buys tea for 50¢ a pound and sells it for 60%. What is his profit on 48 lb.?

4. A storekeeper buys a barrel of flour (containing 196 lb.) at $3.75. He sells the flour by the

pound at 4 a pound. How much does he make on the sale?

5. A farmer sold 15 doz. eggs at 30 a dozen. How much did he receive?

6. If a farmer buys $18.50 worth of groceries and sells the grocer $8.75 worth of butter, how much money does he have to pay the grocer?

7. A grocer buys prunes for $8.75, cheese for $11.50, a barrel of sugar for $6.75; if he gives the salesman $30, how much change does he receive?

8. In a garden bed, 48 yd. long, strawberry plants are planted 1 ft. apart, in rows running lengthwise, the outer plants being 1 ft. from the boundary. How many plants are there in a row? How many plants are there in three rows?

9. A car contains 150 barrels of apples. If each barrel contains 3 bushels, how many bushels of apples are there in the car?

10. A farmer pays $175 for a horse, $ 67 for a harness and $225 for a buggy. How much does he pay altogether?

11. A gardener sets out plants 6 in a row. How many rows can he plant with 225 plants? How many plants are left over?