1. John helped a helped 12 hours less.

2. Ruth spent 30

farmer 14 hours one week; Paul How many hours did Paul work? cents for knitting needles. She

gave the clerk 50 cents. How much change should she receive ?

3. A boy sold 43 newspapers one day, and 67 the next day. How many more did he sell the second day than the first day?

4. After Paul had walked 24 miles, how many more miles did he have to go to complete 68 miles ?

5. Frank raised 78 lettuce plants and John raised 56 plants. How many more plants did Frank raise than John?

6. Our class knitted 78 pairs of socks. 36 pairs were white and the rest were gray. How many pairs. gray socks were knitted?

of

7. Mr. Burton's farm contained 76 acres of land. He had 14 acres more than his neighbor. How many acres were there in his neighbor's farm?

8. James rode 27 miles on his bicycle one day and 14 miles the next day. How much farther did he ride the first day than the second?

10. There were 34 children in Miss Bell's class. How

many of them were absent, if only 22 were present?

1. From 80 subtract 27.

80 = 8 tens + 0 ones, or 7 tens + 10 ones

710 80

As you cannot take 7 from 0, think of 80 as 70+10. Then subtract 7 ones from 10 ones and 2 tens from 7 tens.

FIRST METHOD *

Think:

SECOND METHOD

Think:

Ones. 7+3=10. Write 3. Ones. 10-7-3. Write 3.

How

5. Father paid $18 deposit on a $50 coat.

much more must he pay?

6. George had 40 and paid 25¢ for a thrift stamp. How much had he left?

*See Note, page 88.

1. From 83 subtract 35.

83 = 8 tens + 3 ones, or 7 tens + 13 ones

713

83

Ones. 5+8=13. Write 8. Ones. 13-5=8. Write 8.

Think:

8. Mother made 45 jars of jelly. All but 26 jars were grape jelly. How many jars of grape jelly were there?

5. John bought a penknife at a sale, marked down from 80% to 38. How much did he save?

6. Mary picked 63 quarts of strawberries and donated 36 quarts to a Red Cross sale. How many quarts did she have left?

7. John sold 83 quarts of milk in May and 58 quarts in June. How many more quarts did he sell in May than in June?

8. In a school there were 32 girls and 19 boys. How many more girls than boys were there in the

school?

9. John read 91 pages in his story book and Mary read 76 pages in hers. How many more pages did John read than Mary?

10. On flag day Susan counted 93 flags on one street and Ellen 49 flags on another street. How many more flags did Susan count than Ellen?

1. Mother paid 40¢ for a pound of butter, 32¢ for a pound of coffee, and 14¢ for a quart of milk. How much did she pay for the three articles?

2. How much money had she left from 90?

3. Find the total cost of a pair of socks for 98¢, a cap for 75%, and a pair of gloves for 85¢.

4. Charles bought a dozen lemons for 35¢. How much change did he get from 50¢ ?

5. Katherine put the following coins into her bank : a dime, a cent, a nickel, a quarter, and a half dollar. How much money did she put into her bank?

6. Harold bought a paint box for 69 and a painting book for 124. What was the total cost?

7. John had a school garden. In the spring he paid 15¢ for seed. In the summer he sold radishes for which he received in all 92. How much did he make?

8. A man owed a bill of $ 45. He paid $27. How much then remained to be paid?

9. Lucy and Mary together earned 90 by weeding a vegetable garden. Mary earned 43. How much did Lucy earn?

10. Thomas bought a book for 80, and sold it for 55. How much did he lose?

11. Find the cost of a penknife for 50%, a dozen pencils for 25, and a pencil sharpener for 8.