I. What coins are commonly used in buying goods? Name them in the order of their value.

2. The coins given for a baseball were a silver half-dollar and a silver quarter. What was the price paid?

3. A pocket book contains a dollar bill, a half-dollar, a quarter, 2 dimes, and a five-cent piece. How much money does it contain?

4. In buying a box of candy, Margaret gave the clerk a dollar bill and received as change a half-dollar and two dimes. How much did the box of candy cost?

Find the value:

5. Of 1 quarter, 1 dime, and 3 nickels.

6. Of 1 half-dollar and 3 dimes.

7. Of 3 quarters, 1 dime, and 8 cents.

8. Of 1 half-dollar, 1 quarter, 1 dime, and 1 nickel.

9. Which would you rather have, 3 dimes and a nickel or 2 quarters? 6 quarters or 3 half-dollars?

10. How many nickels does it take to make 50¢?

II. How many dimes can you get for $1.00? For $1.50?

12. A two-dollar bill is changed for quarters. How many quarters should be received?

13. What two silver coins equal 50¢? What four equal $2.00?

14. I buy a book for 35¢ and give the clerk a half-dollar. What coins might I receive as change?

Name one set of coins that might be received as change:

15. From a quarter in buying a pencil for 5¢.

16. From a half-dollar in buying a notebook for 15¢.

17. From a dollar in buying a knife for 45¢.

18. From a two-dollar bill in buying a book for $1.25.

19. From a dollar bill in buying a box of paints for 25¢ and a paint brush for 15¢.

20. A boy buys a notebook for 15¢ and hands the clerk a halfdollar. The clerk gives him as change a dime and a quarter. Tell how he might count out the change.

Use real coins, if possible, and count out change:

21. From a half-dollar for a box of paper bought for 20¢.

22. From a dollar bill for a pencil box bought for 35¢.

FITTING OUT A PLAYGROUND

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23. From a two-dollar bill for a fountain pen bought for $1.25. 24. From a ten-dollar bill for a camera bought for $4.25 and 2 rolls of films bought for 30¢ a roll.

25. Imagine that other purchases are made. Practice counting out the change for them.

(1) A volley ball and a net are to be bought for a playground. How much must be paid for them if $5.75 is charged for the ball and $2.50 for the net?

(2) In paying for the ball and net, how much change should be received from a ten-dollar bill?

[Without pencil.]

1. Why, in solving the first problem about the playground (page 3), was it necessary to add?

2. What name is given to an answer found by addition?

3. In solving the second problem, why was it necessary to subtract?

4. What terms are used in subtraction? Which number is the minuend? Which is the subtrahend? Which is the difference or remainder?

5. An answer found by addition is usually tested by adding each column in the opposite direction. How is an answer found by subtraction tested?

6. Notice that, since only like quantities can be added or subtracted, care was taken in both problem (1) and problem (2) to place cents under cents and dollars under dollars. Where was the dollar sign written? How many places in each answer were pointed off for cents?

[With pencil.]

7. The children in a certain school fitted out their playground. First, in order to earn money, they gave a concert and a play and had a candy sale. At the concert they cleared $26.75; at the play, $48.20; at the candy sale, $32.40. How much money altogether did the children earn?

8. For the youngest children, sand boxes were bought for $6.25, a load of beach sand for $3.50, and a large rubber ball for $2.25. Find the cost.

9. In paying for the load of sand, how much change should have been received from a five-dollar bill?

10. For the children next in age, swings were put up for $29.90, and seesaws for $36.75. For the eldest children, a football was bought for $4.25, a basket ball for $4.00, and a volley ball with a net for $8.25. How much was paid for these things?

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/ PRACTICE IN ADDITION AND SUBTRACTION II. Find the total cost of all the articles bought for the playground. (See problems 8 and 10.)

*12. Find how much the children had left of the money earned at the three entertainments, after paying for the articles named in problems 8 and 10.1

*13. The children wished to buy also a slide costing $65.00. How much more money did they need in order to pay for it?

3. Practice in Addition and Subtraction

These exercises are to help you find out and overcome your difficulties in adding and subtracting. Write answers on the folds of a sheet of paper placed below the problems in the book.2 Work rapidly but at the same time carefully.3

I. REVIEW OF FUNDAMENTAL FACTS

Test No. 1. Addition. Practice on each of these exercises until you can write the correct sums for each set of 11 problems in 30 seconds. Add with only a few words in mind. In adding 4, 5,

1 All problems starred

are

9

5

7

1

4

8181

9631

8261

7341

6431

8.

8051

8421

0

intended as optional work. See Preface.

2 Have each pupil fold his sheet of paper back about one inch for each row of answers; or, have pupil first flute his paper, as in making a paper fan, and then write a row of answers on each fold.

3 For those pupils who are below the standards given, it will be found helpful to provide for practice one or two five-minute periods a day. As soon as a pupil passes a test it should be checked off on the teacher's record.