MENTAL EXERCISES. 1. In this poultry-yard, a hen has 12 chickens, and a goose has 11 goslings; how many more chickens than goslings are there? ANS. 1. Why 1? Because 11 and 1 more make 12; therefore, if we take the 11 from 12, 1 will remain. 2. If you had 14 turkeys, and should sell 12 of them, how many turkeys would you have left? Why? 3. Calvin had 14 ducks, but he gave 11 of them for a peacock; how many ducks has he now? Why? 4. A boy carried 15 chickens to market, and sold 12 of them to an innkeeper, and the remainder to a bookseller; how many chickens did he sell to the bookseller? Why? 5. A man bought a cow for 12 dollars, and sold her for 17 dollars; how many dollars did he gain by his bargain? Why? 6. A grocer, having 19 boxes of lemons, sold 12 boxes; how many boxes has he left? Why? 7. There are 20 men and 11 boys at work in one book-bindery; how many more men than boys are there? Why? 8. Emeline bought 21 yards of lace, and gave 12 yards of it to her sisters; how many yards did she keep for herself? Why? 9. Alanson gave 22 cents for a book, and 11 cents for a quire of paper; how much more did he pay for the book than for the paper? Why? 10. A man, having 23 dollars due him, received in payment two cords of wood, worth 12 dollars, and the remainder in money; how much money did he receive? Why? LESSON VII. MISCELLANEOUS REVIEW. 1. 2 from 9 leaves how many? 2. 2 from 11 leaves how many ? 3. 2 from 19 leaves how many ? 4. 2 from 12 leaves how many ? 5. 3 from 9 leaves how many ? 6. 3 from 8 leaves how many? 7. 3 from 10 leaves how many ? 8. 3 from 12 leaves how many? 9. 3 from 11 leaves how many ? 10. 3 from 13 leaves how many? 11. 4 from 11 leaves how many ? 12. 4 from 10 leaves how many ? 13. 4 from 13 leaves how many ? 14: 4 from 12 leaves how many ? 15. 4 from 14 leaves how many? 16. 5 from 10 leaves how many ? 17. 5 from 12 leaves how many ? 18. 5 from 11 leaves how many ? 19. 5 from 14 leaves how many ? 20. 5 from 13 leaves how many ? 21. 5 from 15 leaves how many ? 22. 6 from 11 leaves how many ? 23. 6 from 13 leaves how many? 24. 6 from 12 leaves how many? 25. 6 from 15 leaves how many? 1. 2. 3. 4. 5. 6. 7. LESSON VIII. MISCELLANEOUS REVIEW. 7 from 16 leaves how many ? 7 from 15 leaves how many ? 7 from 17 leaves how many? 8 from 13 leaves how many ? 8 from 15 leaves how many? 8 from 14 leaves how many ? 8 from 17 leaves how many ? 8. 8 from 16 leaves how many ? 8 from 18 leaves how many ? 9 from 14 leaves how many ? 9 from 16 leaves how many 9. 10. 11. ? 12. 9 from 15 leaves how many? 13. 9 from 18 leaves how many? 14. 9 from 17 leaves how many 15. 9 from 19 leaves how many ? 16. 10 from 15 leaves how many? 17. 10 from 17 leaves how many? 23. 11 from 18 leaves how many? 24. 11 from 17 leaves how many ? 25. 11 from 20 leaves how many 26. 11 from 19 leaves how many ? 27. 11 from 21 leaves how many ? 28. 12 from 17 leaves how many? 29. 12 from 19 leaves how many ? 30. 12 from 18 leaves how many? LESSON IX. MISCELLANEOUS REVIEW. 1. 5 and 4, less 6, are how many? ANS. 3. Why 3? Because 5 and 4 more make 9, and 6 ? 24. 11 and 8, less 10, are how many |