481. Written Exercises.

Copy, rule as a bill-head, find the amount, and receipt

Make receipted bills for the following articles, giving the names of buyers and sellers, dates of sales, etc., at pleasure:

3. Cotton-seed meal, 4 tons, at $21 per ton; corn, 30 bushels, at $.60 per bushel; oats, 26 bushels, at $.38 per bushel.

4. Coal: 10 tons hard coal, at $9.50; 18 tons soft coal, at $6.50.

5. Bacon: 76 lb. short clear sides, at $.09; 33 lb. short rib sides, at $.08; 98 lb. shoulders, at $.06.

487. The denominator of the product contains as many noughts as there are noughts in the denominators of the factors of the product.

488. The product contains as many decimal places as there are decimal places in its factors.

490. To multiply decimals:

Multiply as in whole numbers; point off in the product as many decimal places as there are decimal places in both factors, prefixing noughts when necessary.

491. Written Problems.

1. Three cars are loaded with 42 tons of freight; in one car there are 13.66 tons, in another 14.125 tons; how many tons in the third car?

2. A man walked 103 miles in 3 hours; the first hour he walked 3 miles, the second 33 miles; how far did he walk the third hour?

3. Find the cost of 16 cords of wood at $3.75 a cord.

4. In 3 hours a river rose 7.3 feet; the first hour it rose 3.01 feet, the second hour 3.25 feet; how much the third hour?

5. The minuend is 27.19+13.5; the subtrahend is 16.01+15.3; what is the remainder?

6. If a freight train run 12.75 miles per hour, how far will it run in 2.9 hours?

7. The minuend is 42.375+56.15; the subtrahend is 21.33+5.6; what is the remainder ?

8. John drew 14 buckets of water from the well each day for 28 days; if each bucketful was 2.875 gallons, how many gallons did he draw?

9. The minuend is 873+123; the subtrahend is 163+333; what is the remainder?

10. A man spent $63 for stationery, and $5 for books; find the sum.

11. A multiplicand is 1701; the multiplier is 693; find the product.

DIVISION

492. Oral Drill.

1. How many times does 10 units contain 2 units?

How many times does:

2. 10 thousandths contain 2 thousandths?

3. 16 hundredths contain 2 hundredths?

4. 9 tenths contain 3 tenths?

5. 9 tenths÷3 hundredths =? 9 dimes÷3 cents =?

6. 1 dollar÷ 1 dime = ?

7. 1 unit 1 tenth =?

8. 1 unit 1 hundredth = ? 9. 1 tenth÷1 hundredth =?

10. 2÷.02=?

II. 2.002 ?

=

493. Written Problems.

1. A farmer received $521.50 for 10 bales of cotton; what was the average value?

494. Each removal of the decimal point one place to the left divides a number by 10.

2.

A merchant bought 100 bushels of oats for $33.00; find the price per bushel.

3. A boat made 114.75 miles in 9 hours; find her average speed per hour.

4. A ticket from D to H costs $7.95; the distance is 265 miles; find the cost per mile.