sum to be 29; that is, 27b. and 5oz.: carrying 2 to the pounds and adding, we find their sum to be 350. A merchant bought 4 barrels of potash of the following weights, viz. 1st, 3cwt. 1gr. 25lb. 12oz. 3dr.; 2d, 4cut. 1qr. 21lb. 4oz.; 3d, 4cwt.; 4th, 3cwt. 3qr. 27lb. 15oz. 15dr.: What was the entire weight of the four barrels ? Ans. 15cwt. 3qr. 19lb. Ooz. 2dr. LONG MEASURE. LAND OR SQUARE MEASURE. Sq.yd. Sq.ft. Sq. in. 97 4 104 M. A. R. P. 1 700 3 37 There are 4 fields, the 1st, contains 12A. 2R. 38P.; the 2d, 4A. 1R. 26P.; the 3d, 85A. OR. 19P.; and the 4th. 57A. IR. 2P.: how many acres in the four fields? Ans. 159A. 2R. 5P. SOLID OR CUBIC MEASURE. SUBTRACTION OF DENOMINATE NUMBERS. 1. John has 3s 6d and gives 1s 4d for a knife: how much has he left? Ans. 2s 2d. 2. James has 4s 8d and gives 2s 3d for a bunch of quills: how much has he left? Ans. 2s 5d. 3. What is the difference between £27 16s 8d and carry 1 to 17 making 18: then say, 18 from 36 leaves 18: set it down and carry one to 19 making 20: 20 from 27 leaves 7. Or we may set down the minuend as on the right: £26 35s 20d. Then 9 from 20 leaves 11; 17 from 35 leaves 18; and 19 from 26, 7 remains. §72. Hence; for the subtraction of denominate numbers we have the following RULE. I. Set down the lesser number under the greater, placing the same denominations directly under each other. II. Begin with the lowest denomination, and if the number expressing that denomination be less than the number directly over it, make the subtraction as in simple numbers. But if it be greater, subtract it from the upper number increased by so many units as make one unit of the next higher denomi nation, and carry this one which has been borrowed to the next higher denomination, as in subtraction of simple numbers. III. Do the same for all the denominations, and set down the several remainders, and they will form the true remainder. PROOF. Add the remainder to the subtrahend-their sum should be equal to the minuend. Q. How do you write down the numbers for subtraction? Where do you begin to subtract? When the number to be subtracted is less than the one above it, what do you do? When it is greater, what do you do? How do you prove Subtraction? 7. From 38mo. 2wk. 3da. 7hr. 10m., take 10mo. 3wk. 2da. 10hr. 50m. Ans. 27mo. 3wk. 20hr. 20m. 8. From 176yr. 8mo. 3wk. 4da., take 91yr. 9mo. 2wk. 6da. Ans. 84yr. 11mo. 5da. 9. From 6 tuns, take 3hhd. 15gal. 3qt. 10. From £3, take 3s. 11. From 276., take 20gr. Troy. Ans. 5 tuns. 47gal. 1qt. Ans. 1lb. 11oz. 19pwt. 4gr. 12. From 8b, take 1tb 13 23 29. Ans. 6b 103 53 19.. 13. From 9T., take 1T. 1cwt. 2qr. 20lb. 15oz. 14dr, Ans. 7T. 18cwt. 1qr. 7lb. Ooz. 2dr. 14. From 3 miles, take 3fur. 19rd. Ans. 2mi. 4fur. 21rd. |