The circles to be numbered on both sides as above: CARD No. 1, to shew lesson 1st on one side, and lesson 2d on the other. CARD No. 2, to represent lesson 3d on one side, and lesson 4th on the other, and so on. By this plan, children five or six years of age, can be taught to multiply and answer mentally in a few days. CASE I.-Point two places of figures for cents, beginning at the right hand, counting from right to left. 1. Sold 16 lbs. of Sugar at 6 cts. 14 " 5. A lady bought the following items, &c. 8 yds. Calico 12 9. A lady bought the following articles, viz: at "Domestic muslin " 10. A boy bought the following items, viz: 15. Bought 10 pieces of muslin, each 29 yards, at 22 cents. What is the amount? Ans. $63.80. 16. Sold 5 bags of coffee each weighing 156 lbs. at Ans. $117.00 15 cents. 17. Bought 125 barrels of flour at $4.81 per barrel. Ans. $601.25 18. Sold 125 cords wood at $6 pr. cord. Ans. $750.00 19. Sold 144 bbls. apples at 75c. per lb. Ans. $108.00 20. Bought 162 bushels of oats at 44 cents. What is the amount? Ans. $71.28. 21. Sold 132 yards cassinett at 87 cents. What is 23. Sold to Charles B. Needles, 3 yds. green cloth at $5.25, per yd. $15.75 4 yds. Muslin at 35 cts. per yd. CASE II. MENTAL OPERATIONS. 1.40 $17.15 1. What will 3 oranges come to at 4 cents a piece? Ans. 12c. 2. What will 6 quarts of cherries come to at 5 cents per quart? Ans. 30c. 3. What will 6 pounds of sugar come at 9 cents per pound? Ans. 54c. 4. What will 8 yards of ribbon come to 8 cents per yard? Ans. 64c. 5. If a man travel 3 miles an hour, will he travel in 5 hours? Ans. 15 6. How many will he travel in 6 hours? Ans. 18 7. How many in 8 hours? Ans. 24 8. There are 12 inches in a foot, how many in 2 feet? 14. How many feet in 12 yards? Ans. 36 15. There are 7 days in a week. How many days in 8 weeks? 16. How many days in 9 weeks? Ans. 56 Ans. 63 17. A league is 3 miles, how many miles in 91 leagues? Ans. 273 18. What will 15 pounds of sugar come to at 10 cents? Ans. $1.50 The annexed diagram of an orchard is applicable in this case, to assist the learner in Multiplication. There are 10 rows of apple trees in it, and 5 trees in each row. The question is, how many trees in the or chard? Ans. 50 From the above diagram we find that INCREASE consists of Addition and Multiplication. QUESTIONS FOR EXERCISE. 1. Calculate the amount of 126 lbs. butter at 15 cents per pound? $18.90 2. Calculate the amount of 19 cords of wood at $3.75 per cord? barrel? 3. 169 bbls. cider at $2.12 per $71.25 $358.28 $58.59 $149.91 $176.25 |