72. Test and Graded Practice

With the help of this test find out and overcome your difficulties with decimals. If you fail to get the right answer to a problem in the test, practice solving the problems in the set below having the same letter, then try the problem again.

Test No. 18

25

[With pencil.]

A. Write as decimals: 1, 1, 1050, 41%, 12180, 21180.

B. Add: 8.72, 43.46, .65, 2.8, 24.

C. 7.925 3.49 ?

=

E. 8.74 x 3.5 = ?

F. .38 x .2

=

G. 51.24 42

1. Give the table of United States money. Why is the system used in United States money called a decimal system?

2. How many mills are there in cent? In of a cent?

3. What part of a cent is 4 mills? 8 mills?

4. Read: $.007, $.043, $.256, $2.745.

5. What is meant by a decimal fraction?

6. Read: 4.8 ft., 485.24 mi., .005 T., 1.125 lb.

[With pencil.]

7. What is the weight of three parcels if the first weighs 3.375 lb.; the second, 8.5 lb.; and the third, 4.25 lb.?

8. Cloth is bought at $1.125 a yard and sold for $1.35 a yard. Find the profit on 30 yards.

9. A train traveling at the rate of 45.5 miles per hour makes a run 8.5 hours long. What is the distance covered?

10. The full fare between two cities is $9.78. Find the cost of 3 half-fare tickets.

II. The distance covered by a steamboat in 4 hours is 75.24 miles. What is the average rate of speed per hour?

CHAPTER VII. BUYING AND SELLING

74. Aliquot Parts of a Dollar: Halves, Fourths, and Eighths

1. What is the price per box when 4 boxes of paper sell for $1.00? 2. What is of $1.00? What is, or, of a dollar? What is of a dollar?

3. What part of a dollar is 50¢? 25¢? 75¢?

4. At $1.00 a yard, what is the cost of yard of cloth? Of of a yard? Of of a yard?

5. When buttons sell 8 cards for $1.00, what is the price per card?

6. Find how many cents there are in $1.00. In . In , or . In §. In §, or 2.

of $1.00. In , or, of In 3. Ing.

1 To help in mastering the tables, use the following contest. Write the aliquot parts 12, 37, etc., on the blackboard. Choose two children to race; choose, also, one child to call off the winner, and another to keep score. The score keeper writes

1. What is the price for each glass dish when 4 sell for $1.00? When 8 sell for $1.00?

2. At 121¢ each, how much must be paid for 3 saucers? For 6 saucers? For 7?

At $1.00 a yard, find the cost:

3. Ofyard of lawn. Of

yard. Of of a yard.

4. Of 11 yards of muslin. Of 21 yards. Of 13 yards.

5. Of of a yard of cambric. Of 3 of a yard. Of § of a yard. 6. Of 11 yards of challie. Of 23 yards.

7. What part of a dollar is paid for a yard of cotton when 75¢ is paid? When 371⁄2¢ is paid? When 371¢ is paid? When 623¢ is paid?

75. Aliquot Parts of a Dollar: Halves, Thirds, and Sixths

[Without pencil.] 1. When stockings sell 3 pairs for $1.00, what is the price per pair?

2. What is of $1.00? What is of $1.00?

3. What part of a dollar is 331⁄2¢? What part of a dollar is 663¢? 4. When 6 handkerchiefs sell for $1.00, what is the price paid for each?

8

the initials of the two contestants on the blackboard; the two contestants take pointers; and, as the teacher calls off" of $1.00," " of $1.00," etc., each child tries to be the first to touch the equivalent number of cents. The winner's name is called, and the score keeper writes 1 under his initials. The game continues until one child has scored 6 points. Then the winner chooses two other contestants. The pupils will find an adaptation of the game on page 41 also helpful in giving them mastery of these facts.

5. Find of $1.00. 3, or 3, of $1.00. 8, or, of $1.00. #, or,

9. A carpenter buys

much must he pay for

8, or, of $1.00

, or 3, of $1.00

=

§ of $1.ÚÙ = —

of $1.00

=

hinges at the rate of $1.00 a dozen. How of a dozen? For 1 dozen?

10. At the rate of $1.00 a dozen, how much must a housekeeper pay for of a dozen fruit jars? For 13 dozen?

11. At $1.00 a yard, find the cost of of a yard of silk. Of § of a yard of sash ribbon. Of 15 yards of velveteen.

12. What part of a dollar is charged for an article marked at 163¢? For one at 831¢?

13. At 16 apiece how many glass tumblers can be bought for $1.00? For $2.00?

14. Paring knives bought at the rate of 6 for a dollar are sold at 25¢ apiece. What is the gain on each?

15. Plates marked 20¢ apiece cost how much more apiece than those selling 6 for a dollar?

16. How much more is paid for each plate when they are bought at the rate of 3 for a dollar than at the rate of 4 for a dollar?

17. Find the difference in the price of each dish when sauce-dishes are bought at the rate of 5 for a dollar and when they are bought at the rate of 6 for a dollar.