8. How many are 9 and 1 ? 89 and 1? 99 and 1? 109 and 1? 199 and 1? 209 and 1? 299 and 1 ? 9. How many are 6 and 4? 6 and 5 ? 16 and 4? 16 and 5? 26 and 5? 36 and 5? 56 and 5? 10. How many are 8 and 7? 7? 128 and 7 ? 28 and 7? 38 18 and 7? 118 and and 7? 638 and 7? 4+9? 11. What is 3+9 equal to? +9? 54+9? 55+9? 56+9? 52+9? 23+9? 24 12. What is 2+5+7 equal to ? 12+5+7? 22+ 5+7? 42+5+7? 72+5+7? 92+5+7? 13. How many are 63 and 5 ? 79 and 2? 103 and 8? 47 and 6? 99 and 3? 102 and 7? 113 and 5? 14. How many are 10 and 10? 20 and 10? 50 and 10? 90 and 10? 100 and 10? 200 and 10? 15. 6 and 9 make how many? 34 and 6? 43 and 9? 52 and 8? 58 and 2? 50 and 3? 79 and 6? 88 and 4? 103 and 3? 111 and 9? 124 and 4? 16. How many are 7 and 7 and 8? 6? 34 and 8 and 7? 41 and 10 and 9? and 5? 99 and 10 and 1? 199 and 2 and 9? 21 and 9 and 72 and 4 17. One tree bears 34 apples, another 6, and a third 10; how many apples do all three bear? MODEL. If one tree bears 34 apples, another 6, and a third 10, all three together will bear the sum of 34, 6, and 10 apples, or 50 apples. Answer, 50 apples. 18. A farmer set out 42 apple, 8 pear, and 9 plum trees; how many trees did he set out altogether? 19. If I travel 75 miles by boat, 7 by railroad, and 10 by stage, how many miles do I go in all? 20. 103 English books, 20 French books, and 6 German books, make how many books in all ? 21. James bought 20 cents' worth of bread, 10 cents' worth of cake, and 9 cents' worth of crackers; how much did he have to pay the baker? 22. How many miles will you travel in a day, if you go 21 miles in the morning, 30 miles in the afternoon, and 8 miles in the evening? 23. In a field were 19 sheep, 8 cows, and 5 calves; how many animals were in the field? 24. John was eight years older than Charles. How old was John when Charles was thirteen? How old was each, nine years afterward? 25. How many windows in a factory, if there are 12 in front and 6 on each of the other three sides? 26. In a certain school were 10 boys and 6 more girls than boys; how many scholars altogether? 27. Helen laid out 45 cents for muslin, 5 cents for thread, 9 cents for pins, and 6 cents for needles; how many cents did she spend in all? 28. A fisherman had sold all his stock, except 17 shad, 6 bass, and 9 eels; how many fish had he left? 29. Count by 2's, beginning 2, 4, 6, &c., up to 100. 30. Count by 2's, beginning 1, 3, 5, &c., up to 99. 31. Count by 3's, beginning 1, 4, 7, &c., up to 100. 32. Count by 4's, beginning 2, 6, 10, &c., up to 98. 33. Count by 5's, beginning 1, 6, 11, &c., up to 96. 34. Count by 6's, beginning 2, 8, 14, &c., up to 98. 35. Count by 7's, beginning 3, 10, 17, &c., up to 94. 36. Count by 8's, beginning 5, 13, 21, &c., up to 93. 37. Count by 9's, beginning 1, 10, 19, &c., up to 100. [These exercises may be continued, and varied by commencing differently, till they are made perfectly familiar.] SECTION 3.-1. How many are 43 and 26 ? MODEL. 43=3 units 4 tens; 26-6 units 2 tens. 6 units and tens and 4 tens are 6 tens. 6 tens 9 units 3 units are 9 units; are 69. Ans. 69. 2. What is the sum of 31 and 52? Of 74 and 15? 17+81? 65+32 ? 46+31? 3. How many are 22 and 60? 6. What is the sum of 267 and 431 ? 80+19? 739 and 40. SHORT FORM. 1 and 7 are 8; 3 and 6 are 9; 4 and 2 are 6. Ans. 698. 579 and 120 ? 7. How many are 240 and 326 ? 410 and 378? 26 and 933 ? SHORT FORM. 3 and 9 are 12, 2 units and 1 ten; 1 and 6 and 5 are 12. Ans. 122. 17+23? 21+16? 53+29? 37+47? 86+62? 29+59? 221 +49 ? 72+68? 38+57? 93+67? 11. How many are 14 and 18? 12. How many are 40 and 69? 13. How many are 99 and 12? 14. How many are 108 and 15? 15. How many are 29 and 29? 16. Count by tens,-10, 20, 30, &c.,-up to 100. 17. Count by elevens,-11, 22, 33, &c.,-up to 132. 18. Count by twelves,-12, 24, 36, &c.,-up to 144. 19. Andrew had 23 marbles, and won 38 more; how many had he then? 20. If I give 57 cents to one poor family, and 39 cents to another, how much do I give both? 21. Which is greater, 26+57 or 77+16? 22. After spending 18 dollars for groceries, and 27 dollars for drygoods, a lady found that she had five dollars left. How many dollars had she at first? 23. How many birds are in two flocks, one containing 97 birds, and the other 64 ? 24. A drover who had 56 sheep, bought 14 more, and another flock of 30; how many sheep had he then? 25. Noah lived 600 years before the Flood, and 350 years after it; how old was Noah when he died? 26. Methuselah lived 19 years more than Noah; what age did Methuselah attain? 27. A man who gave 125 dollars for a watch, sold it for 25 dollars more than it cost; what did he get for it? 28. How many pounds are there in two bales of cotton, one weighing 404 pounds, and the other 382? 29. If a farmer raises 93 bushels of wheat and 128 of corn, how many bushels of both does he raise? 30. A lot was bought for 360 dollars, and sold at a profit of 75 dollars; how much did it bring? MODEL. If it was bought for 360 dollars and sold at a profit of 75 dollars, it must have brought the sum of 360 and 75 dollars, or 435 dollars. Ans. 435 dollars. 31. A horse was bought for 238 dollars, and sold at a profit of 27 dollars; what was it sold for? 32. A man makes 56 dollars by selling some goods that cost him 249 dollars; what does he sell them for? 33. An orchard cost 275 dollars; the profit on it being 87 dollars, what was it sold for? 34. Conrad had 8 books, containing 63 pictures, and 19 books, containing 148 pictures. How many books had Conrad in all, and how many pictures? SECTION 4.-Subtraction is the process of taking one number from another. Subtraction is denoted by a short horizontal line called Minus, placed before the smaller number. 4-1 is read four minus one, and means that 1 is to be subtracted from 4. 4-1=3. We have subtracted 1 from 4; the result, 3, is called the Remainder or Difference. 6 leaves 7 leaves 6 8 leaves 7 9 leaves 8 10 leaves 9 6 from 6 leaves 0 7 leaves 1 8 leaves 2 9 leaves 3 10 leaves 4 11 leaves 5 12 leaves 6 13 leaves 7 14 leaves 8 15 leaves 9 9 leaves 4 10 leaves 5 11 leaves 6 |