21. I have four bales of cotton, weighing 479,

506, 499, and 480 pounds; how much do they all weigh?

22. A merchant bought cloth for 1000 dollars, flour for 506 dollars, and cotton for 904 dollars; what did he pay for all?

ORAL EXERCISES.

LESSON 20.

1. Thomas paid 12 cents for a slate, and 8 cents for some paper; he has 8 cents left; how much did he have at first?

2. There are 11 boys, 10 men, and 9 girls at work in a mill; how many in all?

3. A quire of paper cost 12 cents, a slate 12 cents, and a box of pens 12 cents; how much did they all cost?

4. There are 6 boys in one class, and two classes of girls, each having 6; how many boys and girls in all?

5. What will three cords of wood cost, at 10 dollars a cord? 10+10+10= how many? 6. How many are 9+6? 19+6? 29+6? 39+6? 49+6? 59+6? 69+6? 79+6? 89+6?

7. In one bushel there are 4 pecks; how many pecks in 2 bushels? 4+4= how many?

8. If a horse costs 58 dollars, and a saddle costs 8 dollars; what is the cost of both?

9. In one peck there are 8 quarts; how many quarts in 2 pecks? 8+8= how many? there are 2 pints; how many In 3 quarts?

10. In one quart pints in 2 quarts?

11. 10+8+2= how many?

17. What is the sum of 3240+4019+9100

+897 +16+8701?

18. I bought 3 houses, and paid 4444 dollars apiece; how much did I pay for all?

This sign-shows that the number after it is to be subtracted from the number before it. It is

called minus, and means less.

Note.-In borrowing, the logical method is to lessen the next figure of the minuend by 1; practically, however, it is more convenient to add the 1 to the next figure of the subtrahend.

37. A man having 65 dollars loses 21 of them; how many has he remaining?

38. William ran 52 rods, and James ran 22; how much farther did William run than James? 39. There are 36 pupils in a school, and 12 of them are boys; how many are girls?

40. A jar filled with lard weighs 32 pounds, and the jar alone weighs 12 pounds; what is the weight of the lard?