to pounds.* to pounds.* 9. A load of hay weighs from 10. A load of coal weighs from 11. When hay is $12 a ton, 1000 lb. cost 12. When coal is $8 a ton, 1500 lb. cost 13. When meal is $16 a ton, 500 lb. cost 14. When hay is $6 a ton, 200 lb. cost 15. When hay is $7 a ton, 200 lb. cost 16. When hay is $5 a ton, 200 lb. cost 17. When hay is $8 a ton, 200 lb. cost 18. When hay is $6 a ton, 2200 lb. cost 19. When hay is $8 a ton, 2200 lb. cost 20. When hay is $5 a ton, 2200 lb. cost 25. When hay is $12 a ton, 2500 lb. cost 26. When hay is $10 a ton, 3000 lb. cost 27. When hay is $8 a ton, 4500 lb. cost *When you see a load of hay or a load of coal, courteously ask the man in charge of it to tell you how much it weighs. 9. The area of a 2-inch square is 10. The solid content of a 2-inch cube is 11. The area of a 3-inch square is inches. inches. 12. The solid content of a 3-inch cube is 13. The area of a 2-foot square is feet. Find the solid content of--* 17. Eight is earn of 12. A man can as much in 8 days as he can earn in 12 days. can earn $21 in 12 days, in 8 days he can earn 18. Fifteen is earn and If he dollars. times 6. A man can times as much in 15 days as he can earn in 6 days. If he can earn $10 in 6 days, in 15 days he can (a) If a man can earn $104 in 6 weeks, how much can he earn in 15 weeks. *It may be well, after the pupil has solved "mentally " such problems as Nos. 5 and 6, to require him to solve them with a pencil-this, as a preparation for similar problems in which larger numbers are used. Allow the pupil to say, "15 is 3 halves of 10," but remind him that the expression "3 halves of 10," means, 3 times 1 half of 10. 14. Henry had 25 cents; he spent 20 per cent of his money; he spent cents. 15. Peter spent 10 cents; this was 25 per cent of all he earned; he earned cents. 16. Roscoe earned 60 cents and spent 30 cents; he spent per cent of what he earned. *TO THE TEACHER.-Frequently review this page, and give many similar oral problems as a preparation for page 27. †These figures designate the percentage cases to which the problems below them belong. |