Dividing for Quotients of Ten. HOW many times are 2 contained in 20? SOLUTION.-Two are contained 10 times in 20, because 10 times 2 are 20. 2. How many times are 5 contained in 50? 12 in 60? 6 in 36? 7 in 70? 6 in 60? 8 in 72? 3. How many times are 8 contained in 80? 4 in 40? 9 in 90? 12 in 120? 11 in 88? 11 in 110? 4. If I pay 50 dollars for sheep, at 5 dollars each, how many sheep will I buy? 5. If 80 bricks are arranged in piles of 8 bricks in a pile, how many piles are there? 6. There are 100 trees in an orchard, and 10 trees in each row; how many rows are there? 7. How long will it take a car to run 90 miles, if it runs 10 miles an hour? 8. Mary is 5 years old, and Jane is 50 years old; how many times Mary's age equals Jane's age? 9. Write the division table of tens, using the symbols and=. WRITTEN EXERCISES. 1)10 2)20 3)30 4)40 5)50 6)60 7)70 8)80 9)90 10)100 3)72 5)65 7)84 10)810 6)132 7)910 8)816 10)720 9)738 10)7380 5)7645 6)8406 7)8407 9)8109 8)24064 9)36819 10)47240 4)40484 6)43746 5)21025 NOTE.-The teacher will show the pupil how to divide when there are remainders. LESSON XIX. Multiplication and Division with Eleven. HOW many are 11 times 2? SOLUTION.-Eleven times 2 are 22, because the sum of elever 2's is 22. 2. How many are 11 times 1? 11 times 3? 11 times 4? 11 times 5? 11' times 6? 3. How many are 11 times 7? 11 times 8? 11 times 9? 11 times 10? 11 times 11? 11 times 12? 4. How far will a man travel in 11 hours, at the rate of 4 miles an hour? 5. Amos shot 8 pigeons and 11 times as many robins how many robins did he shoot? 6. How many are 1 in 11? 2 in 22? 3 in 33? 4 in 44? 5 in 55? 6 in 66? 7 in 77? 8 in 88? 9 in 99? 10 in 110? 11 in 121? 12 in 132? 7. Write the division table of elevens, using the sym ཨཊྛ། ཚཌ| ཙྪ༅། །ླ 2 11 11 11 11 11 11 11 11 11 11 34 56 78 234 11 11 11 354 429 8)728 4)2244 3)6732 2)223)33 4)44 5)55 6)66 7)77 8)88 9)99 10)110 11)121 4)84 6)96 7)91 8)248 11 11 643 741 854 7 LESSON XX. Multiplication and Division with Twelve. HOW many are 12 times 2? SOLUTION.-Twelve times 2 are 24, because the sum of twelve 2's is 24. 2. How many are 12 times 1? 12 times 3? 12 times 4? 12 times 5? 12 times 6? 3. How many are 12 times 7? 12 times 8? 12 times 9? 12 times 10? 12 times 11? 12 times 12? 4. James sold 12 birds for 3 dollars apiece; how much did he receive for them? 5. What will 12 dozen eggs cost, at the rate of 10 cents a dozen? 6. How many are 1 in 12? 2 in 24? 3 in 36? 4 in 48? 5 in 60? 6 in 72? 7 in 84? 8 in 96? 10 in 120? 11 in 132? 12 in 144? 7. Fill out the following division table, and recite it: 12÷1=? 24÷2=? 36÷3=? 42 53 36 41 51 35 46 72 81 12 12 12 12 12 12 12 12 12 སྐྱལ། 349 4 3 321 747 6 12 7 12 ། 11)6644 12)7284 9)8172 8)6568 7)5068 12)2808 LESSON XXI. Adding and Subtracting with Larger Numbers. HOW many are 12 and 2? 22 and 2? 32 and 2? 42 and 2? 52 and 2? 62 and 2? 72 and 2? 82 and 2? 2. How many are 14 less 2? 24 less 2? 34 less 2? 44 less 2? 54 less 2? 64 less 2? 74 less 2? 3. How many are 2 and 3? 12 and 3? 22 and 3? 32 and 3? 42 and 3? 52 and 3? 62 and 3? 72 and 3? 82 and 3? 92 and 3? 4. How many are 15 less 3? 25 less 3? 35 less 3? 45 less 3? 55 less 3? 65 less 3? 75 less 3? 5. How many are 2 and 4? 22 and 4? 32 and 4? 42 and 4? 52 and 4? 62 and 4? 72 and 4? 82 and 4? 92 and 4? 6. How many are 16 less 4? 26 less 4? 36 less 4? 46 less 4? 56 less 4? 66 less 4? 76 less 4? 86 less 4? 96 less 4? 7. How many are 13 and 5? 23 and 5? 33 and 5? 43 and 5? 53 and 5? 63 and 5? 73 and 5? 83 and 5? 93 and 5? 8. How many are 17 less 5? 27 less 5? 37 less 5? 47 less 5? 57 less 5? 67 less 5? 77 less 5? 87 less 5? 97 less 5? 9. How many are 6 and 6? 16 and 6? 26 and 6? 36 and 6? 46 and 6? 56 and 6? 66 and 6? 76 and 6? 86 and 6? 10. How many are 18 less 6? 28 less 6? 38 less 6? 48 less 6? 58 less 6? 68 less 6? 78 less 6? 88 less 6? 98 less 6? 11. How many are 4 and 8? 14 and 8? 24 and 8? 34 and 8? 44 and 8? 54 and 8? 64 and 8? 74 and 8? 84 and 8? 12. How many are 99 less 8? 89 less 8? 79 less 8? 69 less 8? 59 less 8? 49 less 8? 39 less 8? 29 less 8? 19 less 8? 13. How many are 3 and 13? 4 and 14? 5 and 15? 6 and 16? 7 and 17? 8 and 18? 14. How many are 2 and 22? 3 and 23? 4 and 24? 5 and 25? 6 and 26? 7 and 27? LESSON XXII. Exercises on the Fundamental Operations. A HOUSE has 8 windows on one side and 12 windows on the other side; how many windows on both sides? 2. A farmer had 12 horses in one field and 7 horses in another field; how many had he in both fields? 3. A cooper made 14 buckets, and sold 5 of them; how many buckets then remained? 4. A druggist bought 18 cakes of toilet soap, and sold 10 cakes of it; how many cakes remained? 5. Milo borrowed 25 cents, and returned 8 of them; how many cents does he still owe? 6. Caroline received 20 problems last week, and solved 15 of them; how many did she miss? 7. How many are 2+12? 2+22? 2+32? 2+42? 252? 2+62? 2+72? 8. How many are 3+13? 3+23? 3 + 33? 3 + 43? 3+53? 3+63? 3+73 3+83? 9. How many are 13-3? 23-3? 33-3? 43-3? 53-3? 63-3? 73-3? 83 3? 10. How many are 4+14? 4+24? 4+34? 4+44? 454? 4+64? 4+74? 4+84? 11. How many are 18-4? 28-4? 38-4? 48-4? 58-4? 68-4? 78-4? 88-4? 12. How many are 5+15? 5+25? 5+35? 5+45? 555? 565? 5+75? 5+85? 13. How many are 20-5? 30-5? 40 -5? 50- 5? 60-5? 70—5? 80-5? 90-5? 14. Copy and write the results in place of (?): 15. Copy and write the results in place of (?): |