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18. 12 less 2 are how many? 22 less 12 are how many?

19. If ten be added to two numbers, will their dif ference be the same?

20. What is the difference between 5 and 7? Add 1 to each number, and what will be the difference?

21. What is the difference between 5 and 8? Add 2 to each number, and what will be the difference? 22. What is the difference between 4 and 8? Add 3 to each number, and what will be the difference? 23. What is the difference between 4 and 9? Add 4 to each number, and what will be the difference?

24. What is the difference between 3 and 6? Add 5 to each number, and what will be the difference?

25. What is the difference between 2 and 9? Add 6 to each number, and what will be the difference?

26. What is the difference between 5 and 8? Add 7 to each number, and what will be the difference? 27. What is the difference between 9 and 12? Add 8 to each number, and what will be the difference? 28. What is the difference between 8 and 14? Add 9 to each number, and what will be the difference?

29. If we add any number whatever, to each of two numbers, will their difference be the same?

IX.-1. 4 tens and 5 tens are how many tens? 2. 40 and 50 are how many?

3. 4 tens from 9 tens leave how many tens? 5 tens from 9 tens leave how many tens?

4. 40 from 90 leave how many? 50 from 90 leave how many?

5. 8 tens and 3 tens are, how many tens?

6. 80 and 30 are how many?

7. 11 tens less 3 tens are how many tens? 11 tens less 8 tens are how many tens?

8. 110 less 30 are how many? 110 less 80 are how many?

9. 6 tens and 2 tens are how many tens?

10. 60 and 20 are how many?

11. 8 tens less 6 tens are how many tens? 8 tens less 2 tens are how many tens?

12. 80 less 60 are how many? 80 less 20 are how many?

13. 5 tens and 7 tens are how many tens?

14. 50 and 70 are how many?

15. 12 tens less 5 tens are how many tens? 12 tens less 7 tens are how many tens?

16. 120 less 50 are how many? 120 less 70 are how many?

17. 9 tens and 4 tens are how many tens?

18. 90 and 40 are how many?

19. 13 tens less 9 tens are how many? 13 tens less 4 tens are how many?

20. 130 less 90 are how many? 130 less 40 are how many?

21. 8 tens and 7 tens are how many tens?

22. 80 and 70 are how many?

23. 8 tens from 15 tens leave how many? 7 tens from 15 tens leave how many?

24. 80 from 150 leave how many? 70 from 150 leave how many?

25. 7 tens and 9 tens are how many tens?

26. 70 and 90 are how many?

27. 7 tens from 16 tens leave how many? 9 tens from 16 tens leave how many?

28. 70 from 160 leave how many? 90 from 160 leave how many ?

29. 8 tens and 9 tens are how many tens?

30. 80 and 90 are how many?

31. 17 tens less 8 tens are how many? 17 tens less 9 tens are how many?

32. 170 less 80 are how many? 170 less 90 are how many?

33. 5 tens and 6 tens are how many tens?

34. 50 and 60 are how many?

35. 5 tens from 11 tens leave how many? 6 tens from 11 tens leave how many?

36. 50 from 110 leave how many' ? 60 from 110 leave how many?

37. 6 tens and 4 tens are how many tens?

38. 60 and 40 are how many?

39. What is the difference between 10 tens and 6 tens? 10 tens and 4 tens?

40. What is the difference between 100 and 60 ? 100 and 40 ?

41. 8 tens and 5 tens are how many tens?

42. 80 and 50 are how many ?

43. What is the difference between 13 tens and 8 tens? 13 tens and 5 tens?

44. What is the difference between 130 and 80 ? 130 and 50?

45. 9 tens and 6 tens are how many tens?

46. 90 and 60 are how many?

47. 9 tens from 15 tens leave how many? 6 tens from 15 tens leave how many?

48. 90 from 150 leave how many? 60 from 150 leave how many?

49. 8 tens and 6 tens are how many tens?

50. 80 and 60 are how many?

51. 14 tens less 8 tens are how many? 14 tens less 6 tens are how many?

52. 140 less 80 are how many? 140 less 60 are how many?

53. 5 tens and 9 tens are how many tens? 54. 50 and 90 are how many?

55. What is the difference between 14 tens and 5 tens? 14 tens and 9 tens?

56. What is the difference between 140 and 50? 140 and 90?

57. 7 tens and 6 tens are how many tens?

58. 70 and 60 are how many?

59. What is the difference between 6 tens and 13 tens? 7 tens and 13 tens?

60. What is the difference between 60 and 130? 70 and 130?

61. How many are 40 and 80 ?

X.-1. James had three apples and four pears, and John had four apples and two pears. How many apples, and how many pears had both?

2. How many apples, and how many pears, are 3 apples and 4 apples, and 4 pears and 2 pears?

3. How many tens, and how many units, are 3 tens and 4 tens, and 4 units and 2 units?

4. How many are 30 and 40 and 4 and 2? How many are 34 and 42?

5. Laura had four walnuts and one chestnut, and Ann had three walnuts and two chestnuts. How many walnuts, and how many chestnuts had both?

6. How many tens, and how many units, are 4 tens and 1 unit, and 3 tens and 2 units? How many are 41 and 32?

7. George had saved 41 cents, and a gentleman gave him 32 more. How many had he then?

8. Catherine had six pins and three needles, and Celia had two pins and four needles. How many pins and how needles had they both?

9. How many tens, and how many units, are 6 tens and 3 units, and 2 tens and 4 units? How many are 63 and 24?

10. Mary has learned 63 pages in her spelling book, and she has 24 more to learn. How many pages are there in the book?

11. A woman had eight pins and seven needles, and she gave her daughter six pins and three needles. How many of each had she left?

12. 8 tens and 7 units, less 6 tens and 3 units, are how many? 87 less 63 are how many?

13. A grocer had three bags of coffee and four bags of sugar, and he bought five bags of coffee and two bags of sugar. How many bags of each did he then have?

14. How many tens, and how many units, are there in 3 tens and 4 units, and 5 tens and 2 units? 34 and 52 are how many?

15. A gentleman bought eight yards of broadcloth and six yards of cassimere, and he used three yards of broadcloth and four yards of cassimere. How many yards of each had he left?

16. 8 tens and 6 units, less 3 tens and 4 units, are how many? 86 less 34 are how many?

17. Martha had five quills and three pencils, and Charlotte had two quills and five pencils. How many quills, and how many pencils, had they both ?

18. How many tens, and how many units, are there in 5 tens and 3 units, and 2 tens and 5 units? 53 and 25 are how many?

19. A man had seven dimes and he spent five dimes and three cents. he left?

eight cents, and How much had

20. 7 tens and 8 units, less 5 tens and 3 units, are how many? 78 less 53 are how many?

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