48. Examples in Addition. a. Add 5274, 206, 87, and 428. Ans. 5995. b. Add 132, 3618, 7, and 53. Ans. 3810. c. Find the sum of 8972, 980, 5607, and 89. Ans. 15648. d. What is the sum of 34, 4800, 147, and 675 ? Ans. 5656. e. How many are 346, 4682, 64, and 798 ? Ans. 5890. f. What is the amount of 6079, 416, 346, and five thousand one hundred sixty-four ? Ans. 12005. g. Two thousand eight hundred twenty-one + nine hundred nine + 376 + 43 equals what number? Ans. 4149. h. Six thousand two hundred ten + eight thousand eight + 4743 + 259 what number? Ans. 19220. i. Five thousand fifty plus 9782 plus seven thousand seven hundred seventy plus 842 are how many ? Ans. 23444. j. Six hundred two plus 7524 plus six thousand twenty plus 78 plus 4 are how many ? Ans. 14228. k. How many miles are 467 miles, 1349 miles, nine hundred seven miles, and sixty-four miles ? Ans. 2787 miles. 1. How many dollars are 7419 dollars, 864 dollars, four thousand twenty-five dollars, and ninety dollars ? Ans. 12398 dollars. m. Add the numbers expressed by figures in the examples f, g, and h. Ans. 12262 n. Add the numbers expressed by words in examples f, g, and h. Ans. 23112 Examples with Decimals. 0. What is the sum of 7.62, 14.2, 120.5, 9.08, 0.875, and 2.125 ? Ans. 154.4. p. Find the sum of twenty-three thousandths, five hundredths, ninety-seven hundredths, seven and eight tenths, fifteen and forty-one hundredths. Ans. 24.253. For drill exercises, see pages 59 - 63. 49. Applications. 10. A farmer raised 169 bushels of potatoes in one field, 262 bushels in another, 58 bushels in another, and 1827 in another. How many bushels of potatoes did he raise in all ? 11. My cow Mabel gave 1388 pounds of milk in April, 1456 pounds in May, 1440 in June, 1317 in July, and 1175 in August. How many pounds did she give in all ? 12. I paid $ 2400 * for my farm, $ 155 for a horse, $ 26 for a cart, $ 86 for a mowing-machine, $ 10 for a horse-rake, and $ 108 for a yoke of oxen. What did I pay for all ? 13. A merchant buys 5 bales of cloth, the first containing 768 yards; the second, 754 yards; the third, 698 yards; the fourth, 702 yards; and the fifth, 1003 yards. How many yards are there in all ? 14. A planter sold 6 bales of cotton, weighing as follows: the first, 495 pounds; the second, 509 pounds; the third, 508 pounds; the fourth, 498 pounds; the fifth, 526 pounds; and the sixth, 487 pounds. What was the whole weight ? 15. A merchant bought at one time 324 barrels of flour for $2430; at another, 260 barrels for $2080; at another, 500 barrels for $3000; and at another, 107 barrels for $ 749. How many barrels did he buy? How much did he pay in all ? 16. A steamship sailed 203 miles on Monday, 243 miles on Tuesday, 214 miles on Wednesday, 226 miles on Thursday, 239 miles on Friday, 241 miles on Saturday, and 238 miles on Sunday. How many miles did she sail in the week? 17. In St. Joseph's District, Michigan, there were at one time 335530 peach-trees on 2953 acres of land, 57519 peartrees on 758 acres, 9786 plum-trees on 502 acres, 17654 cherry-trees on 125 acres, 195995 apple-trees on 2958 acres, and 4988 quince-trees on 33 acres. How many acres of land were occupied by these fruit-trees? How many fruit-trees were above in all ? * $ is the sign for dollars. 18. The distance from Boston to Albany is 202 miles; from Albany to Buffalo, 297 miles; from Buffalo to Toledo, 296 miles; and from Toledo to Chicago, 243 miles. What is the distance from Boston to Chicago ? 19. A man dying left by his will $ 42000 to his wife; $14000 to his daughter; $ 3500 in cash, and other property worth $13650, to his son ; $ 750 to each of his two nieces; and the remainder of his property, worth $2627, to his brother. What was the value of the whole property ? 50. Examples with Decimals. 20. Add together 3.07, 0.096, 8.431, and 0.7. 21. What is the sum of $875.16, $ 538.12, and $ 400.875 ? 22. What is the sum of 0.08 of a mile, 0.39 of a mile, and 4.7 miles ? 23. A man paid $15 for a coat, $8.50 for a hat, $6.75 for a pair of boots, and $3.45 for other articles. How much did he pay in all ? 24. A surveyor measures four fields, and finds in the first 1.625 acres; in the second, 7.316 acres; in the third, 12.776 acres; and in the fourth, 17.306 acres. How many acres in all ? 25. How far does a man travel who walks 5.5 miles before breakfast, 17.25 miles between breakfast and dinner, 12 miles between dinner and supper, and 0.875 of a mile after supper ? (26.) (27.) (28.) (29.) (30.) (31.) $ 75.46 $ 754.60 82.40 . $ 476.48 $47.84 $ 780.00 18.72 42.87 74.09 207.42 98.76 15.85 9.47 53.67 77.99 3.69 119.68 15.08 106.84 184.76 4.44 0.49 45.45 11.80 70.00 66.67 0.85 9.84 99.99 4.55 14.76 407.99 109.98 55.00 710.00 7.67 107.34 31.08 3.17 46.50 84.37 17.38 21.95 213.67 6.51 27.75 76.85 5.30 SEOTION III. SUBTRACTION. 51. If Charles has 9 apples and should give 4 of them away, how many apples would he have left ? To find how many he would have left, we take 4, a part of 9, away, and, by counting or otherwise, find there are 5 left; thus we know that he would have 5 apples left. 52. The process of taking part of a number away to find how many are left is subtraction. 53. The number, part of which is to be taken away, is the minuend. 54. The part of the minuend to be taken away is the subtrahend. 55. The part of the minuend left after a part has been taken away is the remainder. Name the minuend in the example above ; the subtrahend ; the remainder. 56. The subtraction of numbers is indicated by the sign -, which is read minus, or less. Thus the expression 9 – 4 = 5 means 9 diminished by 4 equals 5, and is read “nine minus four equals five,” or “nine less four equals five." 57. Oral Exercises. I. Give rapidly the remainders in the following examples: b. d. f. 8 h. i. 3 3 5 7 6 13 11 12 14 1 2 3 4 2 4 7 6 5 a. II. Subtract (that is, count downward) III. What is 80 – 30 ? 50 – 20 ? 90 – 50 ? 150 - 70 ? 700 – 400 ? 1200 - 300 ? 1600 – 900 ? 1500 - 800 ? IV. From 100 subtract 25, 35, 85, 67, 39, 48, 73, 44, 78, 60, 51, 72, 13, 64, 57, 36, 53, 62, 46, 17, 77, 24, 87, 75. For additional oral drill, see pages 59-63. |