8. 14. A merchant bought 18 whips, and sold all but How many did he sell? 18- 8 =? 15. How many are 19 stoves less 10 stoves? 16. Form the subtraction tables of nines and tens. LESSON XXVIII. 1. Begin with 1 and count to 11 by 2's. 4. Count back from 15 to 0 by 3's. 5. Count back from 20 to 0 by 5's. 6. Henry had fifteen dollars. He gave 2 dollars for a hat, 3 dollars for a vest, and 6 dollars for a coat. How much had he left? 7. What number added to 3 makes 10? 9. A harness-maker having 19 harnesses, sold all but 9. How many did he sell? 19-?=9. 10. How many are 2+2? 2+12? 3+2? 3 +12? 4+2? 4+12? 5+2? 5+12? 11. How many are 3+3? 3+13? 4+5? 4 +15? 56? 5+16? 7+6? 7+16? 12. How many are 3+6? 3+16? 4+6? 4 +16? 5+8? 5+18? 5+9? 5+19? 13. How many are 3+5? 3+15? 4+5? 4 +15? 86? 8+16? 8+7? 8+17? 14. In the barn were 12 horses, but 5 of them were taken out. How many remained? 15. 10 chestnuts from 16 chestnuts leave how many chestnuts? 16-10=? 16. A grocer bought 19 brooms. He sold 3 at one time, 5 at another, and 4 at another. How many had he left? 19-3+5+4=? 17. A lady purchased 4 dollars' worth of silk, 3 dollars' worth of velvet, 7 dollars' worth of lace, and 1 dollar's worth of linen. She gave in payment 20 dollars. How much should be returned to her? LESSON XXIX. 1. A man having 18 butter-tubs, sold 3 at one time, 5 at another, and 6 at another. How many tubs had he left? 2. In a room there are 14 flowerpots. There are 4 in one window, 5 in another, and the rest are in the third window. How many are there in the third window? 3. On the first vine there are 12 bunches of grapes, on another there are 3 bunches, and on another 4 bunches. How many bunches more are there on the first vine than on the other two? 12—(3+4)=? 4. How many are 7 and 5 less 3? 7+5-3=? 5. There are 13 boys playing ball, and 5 playing marbles. How many more are there playing ball than there are playing marbles? 13-5=? 6. What is meant by the term addition? What is meant by the term subtraction? 7. Julia is 9 years old, and her sister is 5 years older. What is the age of her sister? 8. Charles is 6 years old, and James is 17 years old. How much older than Charles is James? 9. What number added to 7 will make 15? 10. What number added to 5 will make 12? 11. Begin with 2 and count to 17 by 3's. 12. Count from 19 back to 1 by 3's. 13. What number subtracted from 18 will leave 10? 18-? 10. 18-10=? 14. What number subtracted from 16 will leave 9? 16-?-9. 16-9 ? 15. In a school of 18 pupils all but 3 study geography. How many study geography? 16. James attended school 17 weeks, but Henry attended only 8 weeks? How many weeks did James attend more than Henry? 17—8 ? 17. Julius had written all but 5 lines on a page of his writing-book. If the book had 19 lines on a page, how many had he written? 18. How many are 3+3+2+2—4+5—2+7? 19. How many are 5+7+1-3-2+5-9+8? 20. How many are 6+4+5-3-6-2+8+9? 21. How many are 8-3+2-3+6+2-6+2? 22. How many are 6+8-7-2+5+6+1-4? |