Section 2. ADDITION. MENTAL EXERCISES. 1. John had two cents and Samuel gave him two more, how many has he? 2. Thomas had three nuts and James gave him three more, how many has he? 3. A boy had four apples, and he found two more, how many in all ? 4. I have six dollars, and a man has paid me three more, how many have I ? 5. Enoch had seven marbles, and John gave him two more; how many has he? 6. Benjamin has four dollars, and his sister has three; how many have both? 7. Paid five dollars for a barrel of flour, and seven dollars for sugar; how much for both? 8. James had two cents and Samuel gave him six more; how many has he ? 9. How many are five apples and six apples? 10. How many are four dollars and eight dollars? 11. How many are 2 and 3? 2 and 5? 2 and 7? 2 and 9 ? 12. How many are 3 and 3? 3 and 5? 3 and 7? 3 and 9 ? 13. How many are 4 and 3? 4 and 5? 4 and 8 ? 4 and 9 ? 14. How many are 5 and 3? 5 and 4? 5 and 7 ? 5 and 8 5 and 9 ? 15. How many are 6 and 2? 6 and 4? 6 and 3? 6 and 5 ? 6 and 7 ? 6 and 9 ? 8 and 5? 8 16. How many are 7 and 3? 7 and 5? 7 and 7? 9 and 3? 9 and 5? 9 9 and 9 ? 11 and 2 ? 11 and 4? 11 and 11? 11 and 13 11 and 12? 11 and 2 and 3? 11 and 4 and 4? 11 and 15? 12 and 7 and 3 ? 12 and 6 and 3? 8 and 8 and 49 and 5 and 6 ? 20. Gave nine cents for a pound of cheese, and seven cents for a quart of molasses; what did I give for both? 21. If you buy a picture-book for eleven cents, and a knife for nine cents; what is the cost of both? 22. John paid Luke seven cents for marbles and twelve cents for gingerbread; how much money was received? 23. Thomas paid twelve cents for a top and eight cents for cherries; what did both cost? 24. A merchant sold three barrels of flour to one man and thirteen to another; what was the quantity sold? 25. I have two appletrees, one bears twelve bushels of apples, and the other eleven; how many bushels do both trees produce? 26. How many are 4 and 2 and 3? 5 and 7 and 1? 3 and 4 and 3? 6 and 6 and 5? 2 and 2 and 8? 2 and 3 and 9 ? 27. How many are 2 and 6 and 7? 2 and 7 and 7? 2 and 8 and 9? 2 and 7 and 4? 2 and 5 and 9? 2 and 9 and 6? 2 and 3 and 10? 28. How many are 3 and 2 and 2? 3 and 3 and 2? 3, and 5 and 5? 3 and 4 and 7? 3 and 6 and 7? 3 and 7 and 10? 3 and 8 and 9? 3 and 9 and 9 ? 29. How many are 4 and 2 and 4 and 5? 4 and 6 and and 2? 4 and 3 and 3? 4 7? 4 and 7 and 7? 4 and 8 and 3? 4 and 9 and 3? 4 and 8 and 8 ? 30. How many are 5 and 3 and 3? 5 and 4 and 4? 5 and 5 and I? 5 and 6 and 7? 5 and 7 and 8? 5 and 8 and 7? 5 and 9 and 9? 5 and 10 and 3? 31. How many are 6 and 2 and 7? 6 and 3 and 6? 6 and 5 and 4? 6 and 7 and 5? 6 and 8 and 7? 6 and 9 and 8? 6 and 10 and 10? 32. How many are 7 and 2 and 3? 7 and 3 and 3? and 5 and 9? 7 and 6 and 6? 7 and 8 and 8? 7 and 9 and 8? 7 and 10 and 11 ? 33. How many are 8 and 2 and 9? 8 and 4 and 3? 8 and 7 and 7? 8 and 9 and 10? 8 and 7 and 9? 8 and 10 and 10? 8 and 9 and 12 ? 34. How many are 9 and 5 and 2? 9 and 4 and 3? 9 and 9 and 6? 9 and 10 and 3? 9 and 8 and 8? 9 and 4 and 9? 9 and 9 and 9? 35. How many are 2 and 2 and 4 and 5? 3 and 4 and 5 and 6 4 and 5 and 6 and 7? 5 and 5 ard 4 and 4 ? 9 and 1 and 2 and 3 and 5 ? 36. James had 4 apples, and Samuel gives him 5, and John gives him 6; how many has he? 37. Gave 7 dollars for a barrel of flour, 5 dollars for a hundred weight of sugar, and 8 dollars for a tub of butter; what did I give for the whole ? 38. Paid 5 dollars for a pair of boots, 12 dollars for a coat, and 6 dollars for a vest; what was the whole cost? 39. I have 7 appletrees, 9 cherrytrees, 6 peartrees, and 8 plumtrees; how many in all ? 40. In a certain school, 10 scholars study grammar, 12 arithmetic, 7 logic, 2 rhetoric, and 17 punctuation ; how many are there in the school? 41. Gave 12 cents for an almanac, 14 cents for paper, 5 cents for quills, and 8 cents for an inkstand; what did I give for the whole ? 42. Paid 50 dollars for a horse, and 70 dollars for a chaise; what was the price of both? 43. A man performed a journey in 4 days; the first day he travelled 10 miles; the second day 12 miles; the third day 12 miles; the fourth day 20 miles; what was the whole distance ? 44. Paid 2 dollars for a cap, 3 dollars for shoes, 7 dol lars for pantaloons, 6 dollars for a vest, and 12 dollars for a coat; what was the cost of the whole ? 45. Gave 75 cents for an arithmetic, and 25 cents for a geography; what was the price of both ? 46. On the fourth of July, 20 cents were given to Emily, 15 cents to Betsey, 10 cents to Benjamin, and none to Lydia; what did they all receive? 47. Bought four loads of hay; the first cost 15 dollars, the second 12 dollars, the third 20 dollars, and the fourth 17 dollars; what was the price of the whole ? The pupil, having performed the foregoing questions, will perceive, that ADDITION is the collecting of numbers together to find their sum. B FOR THE SLATE, 1. I have three lots of wild land; the first contains 246 acres, the second 764 acres, and the third 918 acres ; how many acres are there in the three lots? OPERATION. Acres. 246 764 918 In this example, the units are first added, and their sum is found to be 18; in 18 units, there are 1 ten and 8 units; the 8 is written under the column of units, and the 1 (ten) is carried to be added with the tens, which 1928 Ans. are found to be 1 hundred and 2 tens; the 2 is written under the tens, and the 1 (hundred) is carried to the hundreds, which amount to 19 = 1 thousand 9 hundred; the whole of which is set down. Hence the propriety of the following RULE. Then add Write units under units, tens under tens, &c. upwards the units, and if the amount be less than ten, set it down. If the amount be ten or more, write down the unit figure, and carry the tens to be added with the columns of tens. Proceed in this way, till the whole is finished, writing down the total amount in the last column. PROOF. Begin at the top, and add together all the columns of numbers downwards, in the same manner as they were before added upwards; then if the two sums agree, the work is right. |