1. Fact Review

2. 7 − 5 = 2

3. 17 − 9 = 8

4. 3 + 12 = 15

5. 13 − 9 = 4

6. 10 − 8 = 2

7. 3 + 8 = 11

8. 12 − 7 = 5

9. 14 − 6 = 8

10. 11 + 7 = 18

11. 9 + 1 = 10

12. 3 + 11 = 14

13. 6 + 2 = 8

14. 14 − 5 = 9

15. 5 + 6 = 11

16. 6 + 4 = 10

17. 11 − 2 = 9

18. 4 + 3 = 7

19. 17 − 5 = 12

20. 13 − 8 = 5

21. 18 − 9 = 9

22. 372,256,188

23. 105,001

24. 904,620,257

25. HTOHTOHTO,, MillionsThousands 18295033 Ones HTO, 853 Billions,,,

26. HTOHTOHTO,, MillionsThousands 42156185 Ones HTO, 697 Billions,,, 3

27. HTOHTOHTO,, MillionsThousands 91490021 Ones HTO, 5 Billions,,

28. Standard Form 180,365,287,100 Word Form one hundred eighty billion, three hundred sixty-five million, two hundred eighty- seven thousand, one hundred

29. Short Word Form 180 billion, 365 million, 287 thousand, 100 180,365,287,100

30. Expanded Form 100,000,000,000 + 80,000,000,000 + 300,000,000 + 60,000,000 + 200,000 + 5,000,000 + 80,000 + 7,000 + 100 180,365,287,100

31. Expanded Form with Multiplication (1 × 100,000,000,000) + (8 × 10,000,000,000) + (3 × 100,000,000) 10,000,000) + (8 × 10,000) + (7 × 1,000) + (6 × + (5 × 1,000,000) + (2 × 100,000 + (1 × 100) 180,365,287,100

32. 58,4,566,204490 < 58,0,566,204494

33. 37,435,072,12537,435,072 >

34. 9,632,7059,731,750 <

35. 4,000,000 + 300,000 + 30,000 + 8,000 + 800 + 50 + 6 > 4,3 38,8 56 0,865 4,33

36. 653,256,452 six hundred fifty-three million, two hundred fifty-six thousand, four hundred fifty-two =

37. 4,825 4,0005,0004,500 4,825 5,000

38. 30,000,00040,000,000 35,000,000 34,479,387 30,000,00034,479,387

39. 4,825 34,479,387

40. 70,00080,000 73,98570,000

41. 86,567,320,00990,000,000,000

42. HTOHTOHTO,, MillionsThousands 2436942 Ones HTO, Billions,, 40000

43. 12,35612,000

44. 86,600,000,000 86,567,320,009 86,567,320,009

45. Standard form 1 54,023,602,010 fifty-four billion, twenty-three million, six hundred two thousand, ten Word form

46. Standard form 3 54,023,602,010 (5 × 10,000,000,000) + (4 × 1,000,000,000) + (2 × 10,000,000) + (3 × 1,000,000) + (6 × 100,000) + (2 × 1,000) + (1 × 10) Expanded form with multiplication

47. 5 six hundred eighty-nine thousand, seven hundred forty-three 600,000 + 80,000 + 9,000 + 700 + 40 + 3 689,743

48. 7 twenty-nine billion, thirty-four million, six hundred eleven thousand 20,000,000,000 + 9,000,000,000 + 30,000,000 + 4,000,000 + 600,000 + 10,000 + 1,000 29,034,611,000

49. 9 ninety-three thousand, four hundred twenty-eight 90,000 + 3,000 + 400 + 20 + 8 93,428

50. 11 four billion, seven hundred eighty-six million, nine hundred forty-two thousand, thirteen 4,786,942,013 4,000,000,000 + 700,000,000 + 80,000,000 + 6,000,000 + 900,000 + 40,000 + 2,000 + 10 + 3

51. 13 50,000,000,000 59,643,709,428

52. 15 C.16 billions, 807 millions, 643 thousands, 915 ones 16,807,643,915

53. 17 E.100,000,000,000 + 10,000,000,000 + 6,000,000,000 + 700,000,000 + 8,000,000 + 600,000 + 40,000 + 3,000 + 900 + 10 + 5 116,708,643,915

54. 19 B.sixty-one million, one hundred forty-seven thousand, nine hundred two 61,147,902

55. 4,942,346,085 20 5,000,000,000 one billion one million one thousand

56. 4,942,346,085 20 4,942,000,000 5,000,000,000 4,942,000,000 one billion one million one thousand

57. 4,942,346,085 20 4,942,346,000 5,000,000,000 4,942,000,000 4,942,346,000 one billion one million one thousand

58. 4,942,346,085 22 206,000,000,000 5,000,000,000 4,942,000,000 206,000,000,000 4,942,346,000 one billion one million one thousand 205,724,539,612

59. 4,942,346,085 22 205,725,000,000 5,000,000,000 4,942,000,000 206,000,000,000 4,942,346,000 205,725,000,000 one billion one million one thousand 205,724,539,612

60. 4,942,346,085 22 205,724,540,000 5,000,000,000 4,942,000,000 206,000,000,000 4,942,346,000 205,725,000,000 one billion one million one thousand 205,724,539,612 205,724,540,000

61. 70,456,321,097 24 70,500,000,000 hundred million hundred thousand hundred

62. 70,456,321,097 24 70,456,300,000 70,500,000,000 hundred million hundred thousand hundred 70,456,300,000

63. 70,456,321,097 24 70,456,321,100 70,500,000,000 hundred million hundred thousand hundred 70,456,300,000 70,456,321,100

64. 26 nine hundred sixty-eight billion, four million, seventy-one thousand, one hundred nine _______________ rounds to _______________ rounds to _______________ 968,004,071,109 968,004,070,000