## Engage NY Eureka Math 2nd Grade Module 4 Lesson 30 Answer Key

### Eureka Math Grade 2 Module 4 Lesson 30 Sprint Answer Key

A. Subtraction Crossing a Ten

Answer:

30 – 1 = 29, 40 – 2 = 38, 50 – 3 = 47, 50 – 4 = 46, 50 – 5 = 45, 50 – 9 = 41, 51 – 9 = 42, 61 – 9 = 52, 81 – 9 = 72, 82 – 9 = 73, 92 – 9 = 83, 93 – 9 = 84, 93 – 8 = 85, 83 – 8 = 75, 33 – 8 = 25, 43 – 7 = 36, 53 – 6 = 47, 63 – 6 = 57, 63 – 5 = 58, 73 – 5 = 68, 93 – 5 = 88, 31 – 2 = 29, 31 – 3 = 28, 31 – 4 = 27, 41 – 4 = 37, 51 – 5 = 46, 61 – 6 = 55, 71 – 7 = 64, 81 – 8 = 73, 82 – 8 = 74, 82 – 7 = 75, 82 – 6 = 76, 82 – 3 = 79, 34 – 5 = 29, 45 – 6 = 39, 56 – 7 = 49, 67 – 8 = 59, 78 – 9 = 69, 77 – 9 = 68, 64 – 6 = 58, 24 – 8 = 16, 35 – 8 = 27, 36 – 8 = 28.

Explanation:

In the above-given question,

given that,

subtract the numbers.

30 – 1 = 29, 40 – 2 = 38, 50 – 3 = 47, 50 – 4 = 46, 50 – 5 = 45, 50 – 9 = 41, 51 – 9 = 42, 61 – 9 = 52, 81 – 9 = 72, 82 – 9 = 73, 92 – 9 = 83, 93 – 9 = 84, 93 – 8 = 85, 83 – 8 = 75, 33 – 8 = 25, 43 – 7 = 36, 53 – 6 = 47, 63 – 6 = 57, 63 – 5 = 58, 73 – 5 = 68, 93 – 5 = 88, 31 – 2 = 29, 31 – 3 = 28, 31 – 4 = 27, 41 – 4 = 37, 51 – 5 = 46, 61 – 6 = 55, 71 – 7 = 64, 81 – 8 = 73, 82 – 8 = 74, 82 – 7 = 75, 82 – 6 = 76, 82 – 3 = 79, 34 – 5 = 29, 45 – 6 = 39, 56 – 7 = 49, 67 – 8 = 59, 78 – 9 = 69, 77 – 9 = 68, 64 – 6 = 58, 24 – 8 = 16, 35 – 8 = 27, 36 – 8 = 28.

Question 1.

30 – 1 = 29.

Answer:

30 – 1 = 29.

Explanation:

In the above-given question,

given that,

subtract the numbers.

30 – 1 = 29.

29 + 1 = 30.

Question 2.

40 – 2 = 38.

Answer:

40 – 2 = 38.

Explanation:

In the above-given question,

given that,

subtract the numbers.

40 – 2 = 38.

38 + 2 = 50.

Question 3.

50 – 3 = 47.

Answer:

50 – 3 = 47.

Explanation:

In the above-given question,

given that,

subtract the numbers.

50 – 3 = 47.

47 + 3 = 50.

Question 4.

50 – 4 = 46.

Answer:

50 – 4 = 46.

Explanation:

In the above-given question,

given that,

subtract the numbers.

50 – 4 = 46.

46 + 4 = 50.

Question 5.

50 – 5 = 45.

Answer:

50 – 5 = 45.

Explanation:

In the above-given question,

given that,

subtract the numbers.

50 – 5 = 45.

45 + 5 = 50.

Question 6.

50 – 9 = 41.

Answer:

50 – 9 = 41.

Explanation:

In the above-given question,

given that,

subtract the numbers.

50 – 9 = 41.

41 + 9 = 50.

Question 7.

51 – 9 = 42.

Answer:

51 – 9 = 42.

Explanation:

In the above-given question,

given that,

subtract the numbers.

51 – 9 = 42.

42 + 9 = 51.

Question 8.

61 – 9 = 52.

Answer:

61 – 9 = 52.

Explanation:

In the above-given question,

given that,

subtract the numbers.

61 – 9 = 52.

52 + 9 = 61.

Question 9.

81 – 9 = 72.

Answer:

81 – 9 = 72.

Explanation:

In the above-given question,

given that,

subtract the numbers.

81 – 9 = 72.

72 + 9 = 81.

Question 10.

82 – 9 = 73.

Answer:

82 – 9 = 73.

Explanation:

In the above-given question,

given that,

subtract the numbers.

82 – 9 = 73.

73 + 9 = 82.

Question 11.

92 – 9 = 83.

Answer:

92 – 9 = 83.

Explanation:

In the above-given question,

given that,

subtract the numbers.

92 – 9 = 83.

83 + 9 = 92.

Question 12.

93 – 9 = 84.

Answer:

93 – 9 = 86.

Explanation:

In the above-given question,

given that,

subtract the numbers.

93 – 9 = 86.

86 + 9 = 93.

Question 13.

93 – 8 = 85.

Answer:

93 – 8 = 87.

Explanation:

In the above-given question,

given that,

subtract the numbers.

93 – 8 = 87.

87 + 8 = 93.

Question 14.

83 – 8 = 75.

Answer:

83 – 8 = 75.

Explanation:

In the above-given question,

given that,

subtract the numbers.

83 – 8 = 75.

75 + 8 = 83.

Question 15.

33 – 8 = 25.

Answer:

33 – 8 = 25.

Explanation:

In the above-given question,

given that,

subtract the numbers.

33 – 8 = 25.

25 + 8 = 33.

Question 16.

33 – 7 = 26.

Answer:

33 – 7 = 26.

Explanation:

In the above-given question,

given that,

subtract the numbers.

33 – 7 = 26.

26 + 7 = 33.

Question 17.

43 – 7 = 36.

Answer:

43 – 7 = 36.

Explanation:

In the above-given question,

given that,

subtract the numbers.

43 – 7 = 36.

36 + 7 = 43.

Question 18.

53 – 6 = 47.

Answer:

53 – 6 = 47.

Explanation:

In the above-given question,

given that,

subtract the numbers.

53 – 6 = 47.

47 + 6 = 53.

Question 19.

63 – 6 = 57.

Answer:

63 – 6 = 57.

Explanation:

In the above-given question,

given that,

subtract the numbers.

63 – 6 = 57.

57 + 6 = 63.

Question 20.

63 – 5 = 58.

Answer:

63 – 5 = 58.

Explanation:

In the above-given question,

given that,

subtract the numbers.

63 – 5 = 58.

58 + 5 = 63.

Question 21.

73 – 5 = 68.

Answer:

73 – 5 = 68.

Explanation:

In the above-given question,

given that,

subtract the numbers.

73 – 5 = 68.

68 + 5 = 73.

Question 22.

93 – 5 = 88.

Answer:

93 – 5 = 88.

Explanation:

In the above-given question,

given that,

subtract the numbers.

93 – 5 = 88.

88 + 5 = 93.

Question 23.

31 – 2 = 29.

Answer:

31 – 2 = 29.

Explanation:

In the above-given question,

given that,

subtract the numbers.

31 – 2 = 29.

29 + 2 = 31.

Question 24.

31 – 3 = 28.

Answer:

31 – 3 = 28.

Explanation:

In the above-given question,

given that,

subtract the numbers.

31 – 3 = 28.

28 + 3 = 31.

Question 25.

31 – 4 = 27.

Answer:

31 – 4 = 27.

Explanation:

In the above-given question,

given that,

subtract the numbers.

31 – 4 = 27.

27 + 4 = 31.

Question 26.

41 – 4 = 37.

Answer:

41 – 4 = 37.

Explanation:

In the above-given question,

given that,

subtract the numbers.

41 – 4 = 37.

37 + 4 = 41.

Question 27.

51 – 5 = 46.

Answer:

51 – 5 = 46.

Explanation:

In the above-given question,

given that,

subtract the numbers.

51 – 5 = 46.

46 + 5 = 51.

Question 28.

61 – 6 = 55.

Answer:

61 – 6 = 55.

Explanation:

In the above-given question,

given that,

subtract the numbers.

61 – 6 = 55.

55 + 6 = 61.

Question 29.

71 – 7 = 64.

Answer:

71 – 7 = 54.

Explanation:

In the above-given question,

given that,

subtract the numbers.

71 – 7 = 54.

54 + 7 = 71.

Question 30.

81 – 8 = 73.

Answer:

81 – 8 = 63.

Explanation:

In the above-given question,

given that,

subtract the numbers.

81 – 8 = 63.

63 + 8 = 81.

Question 31.

82 – 8 = 74.

Answer:

82 – 8 = 74.

Explanation:

In the above-given question,

given that,

subtract the numbers.

82 – 8 = 74.

74 + 8 = 82.

Question 32.

82 – 7 = 75.

Answer:

82 – 7 = 75.

Explanation:

In the above-given question,

given that,

subtract the numbers.

82 – 7 = 75.

75 + 7 = 82.

Question 33.

82 – 6 = 76.

Answer:

82 – 6 = 76.

Explanation:

In the above-given question,

given that,

subtract the numbers.

82 – 6 = 76.

76 + 6 = 82.

Question 34.

82 – 3 = 79.

Answer:

82 – 3 = 79.

Explanation:

In the above-given question,

given that,

subtract the numbers.

82 – 3 = 79.

79 + 3 = 82.

Question 35.

34 – 5 = 29.

Answer:

34 – 5 = 29.

Explanation:

In the above-given question,

given that,

subtract the numbers.

34 – 5 = 29.

29 + 5 = 34.

Question 36.

45 – 6 = 39.

Answer:

45 – 6 = 39.

Explanation:

In the above-given question,

given that,

subtract the numbers.

45 – 6 = 39.

39 + 6 = 45.

Question 37.

56 – 7 = 49.

Answer:

56 – 7 = 49.

Explanation:

In the above-given question,

given that,

subtract the numbers.

56 – 7 = 49.

49 + 7 = 56.

Question 38.

67 – 8 = 59.

Answer:

67 – 8 = 59.

Explanation:

In the above-given question,

given that,

subtract the numbers.

67 – 8 = 59.

59 + 8 = 67.

Question 39.

78 – 9 = 69.

Answer:

78 – 9 = 69.

Explanation:

In the above-given question,

given that,

subtract the numbers.

78 – 9 = 69.

69 + 9 = 78.

Question 40.

77 – 9 = 68.

Answer:

77 – 9 = 68.

Explanation:

In the above-given question,

given that,

subtract the numbers.

77 – 9 = 68.

68 + 9 = 77.

Question 41.

64 – 6 = 58.

Answer:

64 – 6 = 58.

Explanation:

In the above-given question,

given that,

subtract the numbers.

64 – 6 = 58.

58 + 6 = 64.

Question 42.

24 – 8 = 16.

Answer:

24 – 8 = 16.

Explanation:

In the above-given question,

given that,

subtract the numbers.

16 – 8 = 24.

24 + 8 = 16.

Question 43.

35 – 8 = 27.

Answer:

35 – 8 = 27.

Explanation:

In the above-given question,

given that,

subtract the numbers.

35 – 8 = 27.

27 + 8 = 35.

Question 44.

36 – 8 = 28.

Answer:

36 – 8 = 28.

Explanation:

In the above-given question,

given that,

subtract the numbers.

36 – 8 = 28.

28 + 8 = 36.

B. Subtraction Crossing a Ten

Answer:

20 – 1 = 19, 30 – 2 = 28, 40 – 3 = 37, 40 – 4 = 36, 40 – 5 = 35, 40 – 9 = 31, 41 – 9 = 32, 51 – 9 = 42, 71 – 9 = 62, 72 – 9 = 63, 82 – 9 = 73, 83 – 9 = 74, 93 – 8 = 85, 23 – 8 = 15, 33 – 7 = 26, 43 – 6 = 37, 53 – 6 = 47, 53 – 5 = 48, 63 – 5 = 58, 83 – 5 = 78, 21 – 2 = 19, 21 – 3 = 18, 21 – 4 = 17, 31 – 4 = 27, 41 – 5 = 36, 51 – 6 = 45, 61 – 7 = 54, 71 – 8 = 63, 72 – 8 = 64, 72 – 7 = 65, 72 – 6 = 66, 72 – 3 = 69, 24 – 5 = 19, 35 – 6 = 29, 46 – 7 = 39, 57 – 8 = 49, 68 – 9 = 59, 67 – 9 = 58, 54 – 6 = 48, 24 – 9 = 15, 35 – 9 = 25, 46 – 9 = 27.

Explanation:

In the above-given question,

given that,

subtract the numbers.

20 – 1 = 19, 30 – 2 = 28, 40 – 3 = 37, 40 – 4 = 36, 40 – 5 = 35, 40 – 9 = 31, 41 – 9 = 32, 51 – 9 = 42, 71 – 9 = 62, 72 – 9 = 63, 82 – 9 = 73, 83 – 9 = 74, 93 – 8 = 85, 23 – 8 = 15, 33 – 7 = 26, 43 – 6 = 37, 53 – 6 = 47, 53 – 5 = 48, 63 – 5 = 58, 83 – 5 = 78, 21 – 2 = 19, 21 – 3 = 18, 21 – 4 = 17, 31 – 4 = 27, 41 – 5 = 36, 51 – 6 = 45, 61 – 7 = 54, 71 – 8 = 63, 72 – 8 = 64, 72 – 7 = 65, 72 – 6 = 66, 72 – 3 = 69, 24 – 5 = 19, 35 – 6 = 29, 46 – 7 = 39, 57 – 8 = 49, 68 – 9 = 59, 67 – 9 = 58, 54 – 6 = 48, 24 – 9 = 15, 35 – 9 = 25, 46 – 9 = 27.

Question 1.

20 – 1 = 19.

Answer:

20 – 1 = 19.

Explanation:

In the above-given question,

given that,

subtract the numbers.

20 – 1 = 19.

19 + 1 = 20.

Question 2.

30 – 2 = 28.

Answer:

30 – 2 = 28.

Explanation:

In the above-given question,

given that,

subtract the numbers.

30 – 2 = 28.

28 + 2 = 30.

Question 3.

40 – 3 = 37.

Answer:

40 – 3 = 37.

Explanation:

In the above-given question,

given that,

subtract the numbers.

40 – 3 = 37.

37 + 3 = 40.

Question 4.

40 – 4 = 36.

Answer:

40 – 4 = 36.

Explanation:

In the above-given question,

given that,

subtract the numbers.

40 – 4 = 36.

36 + 4 = 40.

Question 5.

40 – 5 = 35.

Answer:

40 – 5 = 35.

Explanation:

In the above-given question,

given that,

subtract the numbers.

40 – 5 = 35.

35 + 5 = 40.

Question 6.

40 – 9 = 31.

Answer:

40 – 9 = 31.

Explanation:

In the above-given question,

given that,

subtract the numbers.

40 – 9 = 31.

31 + 9 = 40.

Question 7.

41 – 9 = 32.

Answer:

41 – 9 = 32.

Explanation:

In the above-given question,

given that,

subtract the numbers.

41 – 9 = 32.

32 + 9 = 41.

Question 8.

51 – 9 = 42.

Answer:

51 – 9 = 42.

Explanation:

In the above-given question,

given that,

subtract the numbers.

51 – 9 = 42.

42 + 9 = 51.

Question 9.

71 – 9 = 62.

Answer:

71 – 9 = 62.

Explanation:

In the above-given question,

given that,

subtract the numbers.

71 – 9 = 62.

62 + 9 = 71.

Question 10.

72 – 9 = 63.

Answer:

72 – 9 = 63.

Explanation:

In the above-given question,

given that,

subtract the numbers.

72 – 9 = 63.

63 + 9 = 71.

Question 11.

82 – 9 = 73.

Answer:

82 – 9 = 71.

Explanation:

In the above-given question,

given that,

subtract the numbers.

82 – 9 = 71.

71 + 9 = 82.

Question 12.

83 – 9 = 74.

Answer:

83 – 9 = 72.

Explanation:

In the above-given question,

given that,

subtract the numbers.

83 – 9 = 72.

72 + 9 = 83.

Question 13.

83 – 8 = 75.

Answer:

83 – 8 = 75.

Explanation:

In the above-given question,

given that,

subtract the numbers.

83 – 8 = 75.

75 + 8 = 83.

Question 14.

93 – 8 = 85.

Answer:

93 – 8 = 85.

Explanation:

In the above-given question,

given that,

subtract the numbers.

93 – 8 = 85.

85 + 8 = 93.

Question 15.

23 – 8 = 15.

Answer:

23 – 8 = 15.

Explanation:

In the above-given question,

given that,

subtract the numbers.

23 – 8 = 15.

15 + 8 = 23.

Question 16.

23 – 7 = 16.

Answer:

23 – 7 = 18.

Explanation:

In the above-given question,

given that,

subtract the numbers.

23 – 7 = 18.

18 + 7 = 23.

Question 17.

33 – 7 = 26.

Answer:

33 – 7 = 26.

Explanation:

In the above-given question,

given that,

subtract the numbers.

33 – 7 = 26.

26 + 7 = 33.

Question 18.

43 – 6 = 37.

Answer:

43 – 6 = 27.

Explanation:

In the above-given question,

given that,

subtract the numbers.

43 – 6 = 27.

27 + 6 = 43.

Question 19.

53 – 6 = 47.

Answer:

53 – 6 = 47.

Explanation:

In the above-given question,

given that,

subtract the numbers.

53 – 6 = 47.

47 + 6 = 53.

Question 20.

53 – 5 = 48.

Answer:

53 – 5 = 48.

Explanation:

In the above-given question,

given that,

subtract the numbers.

53 – 5 = 48.

48 + 5 = 53.

Question 21.

63 – 5 = 58.

Answer:

63 – 5 = 58.

Explanation:

In the above-given question,

given that,

subtract the numbers.

63 – 5 = 58.

58 + 5 = 63.

Question 22.

83 – 5 = 78.

Answer:

83 – 5 = 78.

Explanation:

In the above-given question,

given that,

subtract the numbers.

83 – 5 = 78.

78 + 5 = 83.

Question 23.

21 – 2 = 19.

Answer:

21 – 2 = 19.

Explanation:

In the above-given question,

given that,

subtract the numbers.

21 – 2 = 19.

19 + 2 = 21.

Question 24.

21 – 3 = 18.

Answer:

21 – 3 = 18.

Explanation:

In the above-given question,

given that,

subtract the numbers.

21 – 3 = 18.

18 + 3 = 21.

Question 25.

21 – 4 = 17.

Answer:

21 – 4 = 17.

Explanation:

In the above-given question,

given that,

subtract the numbers.

21 – 4 = 17.

17 + 4 = 21.

Question 26.

31 – 4 = 27.

Answer:

31 – 4 = 27.

Explanation:

In the above-given question,

given that,

subtract the numbers.

31 – 4 = 27.

27 + 4 = 31.

Question 27.

41 – 5 = 36.

Answer:

41 – 5 = 36.

Explanation:

In the above-given question,

given that,

subtract the numbers.

41 – 5 = 36.

36 + 5 = 41.

Question 28.

51 – 6 = 45.

Answer:

51 – 6 = 45.

Explanation:

In the above-given question,

given that,

subtract the numbers.

51 – 6 = 45.

45 + 6 = 51.

Question 29.

61 – 7 = 54.

Answer:

61 – 7 = 54.

Explanation:

In the above-given question,

given that,

subtract the numbers.

61 – 7 = 54.

54 + 7 = 61.

Question 30.

71 – 8 = 63.

Answer:

71 – 8 = 63.

Explanation:

In the above-given question,

given that,

subtract the numbers.

71 – 8 = 63.

63 + 8 = 71.

Question 31.

72 – 8 = 64.

Answer:

72 – 8 = 64.

Explanation:

In the above-given question,

given that,

subtract the numbers.

72 – 8 = 64.

64 + 8 = 72.

Question 32.

72 – 7 = 65.

Answer:

72 – 7 = 65.

Explanation:

In the above-given question,

given that,

subtract the numbers.

72 – 7 = 65.

65 + 7 = 72.

Question 33.

72 – 6 = 66.

Answer:

72 – 6 = 66.

Explanation:

In the above-given question,

given that,

subtract the numbers.

72 – 6 = 66.

66 + 6 = 72.

Question 34.

72 – 3 = 69.

Answer:

72 – 3 = 69.

Explanation:

In the above-given question,

given that,

subtract the numbers.

72 – 3 = 69.

69 + 3 = 72.

Question 35.

24 – 5 = 19.

Answer:

24 – 5 = 19.

Explanation:

In the above-given question,

given that,

subtract the numbers.

24 – 5 = 19.

19 + 5 = 24.

Question 36.

35 – 6 = 29.

Answer:

35 – 6 = 29.

Explanation:

In the above-given question,

given that,

subtract the numbers.

35 – 6 = 29.

29 + 6 = 35.

Question 37.

46 – 7 = 39.

Answer:

46 – 7 = 39.

Explanation:

In the above-given question,

given that,

subtract the numbers.

46 – 7 = 39.

39 + 7 = 46.

Question 38.

57 – 8 = 49.

Answer:

57 – 8 = 49.

Explanation:

In the above-given question,

given that,

subtract the numbers.

57 – 8 = 49.

49 + 8 = 57.

Question 39.

68 – 9 = 59.

Answer:

68 – 9 = 59.

Explanation:

In the above-given question,

given that,

subtract the numbers.

68 – 9 = 59.

59 + 9 = 68.

Question 40.

67 – 9 = 58.

Answer:

67 – 9 = 58.

Explanation:

In the above-given question,

given that,

subtract the numbers.

67 – 9 = 58.

58 + 9 = 67.

Question 41.

54 – 6 = 48.

Answer:

54 – 6 = 48.

Explanation:

In the above-given question,

given that,

subtract the numbers.

54 – 6 = 48.

48 + 6 = 54.

Question 42.

24 – 9 = 15.

Answer:

24 – 9 = 15.

Explanation:

In the above-given question,

given that,

subtract the numbers.

24 – 9 = 15.

15 + 9 = 24.

Question 43.

35 – 9 = 26.

Answer:

35 – 9 = 25.

Explanation:

In the above-given question,

given that,

subtract the numbers.

35 – 9 = 25.

25 + 9 = 35.

Question 44.

46 – 9 = 37.

Answer:

46 – 9 = 37.

Explanation:

In the above-given question,

given that,

subtract the numbers.

46 – 9 = 37.

37 + 9 = 46.

### Eureka Math Grade 2 Module 4 Lesson 30 Problem Set Answer Key

Question 1.

Linda and Keith added 127 + 59 differently. Explain why Linda’s work and Keith’s work are both correct.

(7_+_9)_=_16._____________________________________________________

__(20_+_50)_=_70___________________________________________________

___(100_+_0__0_________________________________________________

Answer:

Linda’s work and Keith’s work are both correct.

Explanation:

In the above-given question,

given that,

127 + 59 = 186.

7 + 9 = 16.

20 + 50 = 70.

100 + 0 = 100.

127 + 59 = 186.

Question 2.

Jake solved 124 + 69 using new groups below. Solve the same problem another way.

Answer:

124 + 69 = 193.

Explanation:

In the above-given question.

given that,

4 + 9 = 13.

20 + 60 = 80.

100 + 0 = 100.

100 + 80 + 13 = 193.

Question 3.

Solve each problem two different ways.

a. 134 + 48

Answer:

134 + 48 = 182.

Explanation:

In the above-given question.

given that,

4 + 8 = 12.

30 + 40 = 70.

100 + 0 = 100.

100 + 70 + 2 = 182.

134 + 48 = 182.

b. 83 + 69

Answer:

83 + 69 = 152.

Explanation:

In the above-given question.

given that,

3 + 9 = 12.

80 + 60 = 140.

140 + 12 = 152.

83 + 69 = 152.

c. 46 + 75

Answer:

46 + 75 = 121.

Explanation:

In the above-given question.

given that,

6 + 5 = 11.

70 + 40 = 110.

110 + 11 = 121.

46 + 75 = 121.

d. 63 + 128

Answer:

63 + 128 = 191.

Explanation:

In the above-given question.

given that,

3 + 8 = 11.

60 + 20 = 80.

100 + 0 = 100.

100 + 80 + 11 = 191.

63 + 128 = 191.

### Eureka Math Grade 2 Module 4 Lesson 30 Exit Ticket Answer Key

Question 1.

Kevin solved 166 + 25 using totals below. Solve the same problem another way.

Answer:

166 + 25 = 191.

Explanation:

In the above-given question.

given that,

Kevin solved 166 + 25 using the totals below.

new models below = 6 + 5 = 11.

60 + 20 = 80.

100 + 0 = 100.

100 + 80 + 11 = 191.

Question 2.

Explain how Kevin’s work and your work are similar.

________________________________________

________________________________________

________________________________________

Answer:

Yes, Kevin’s work and my work are similar.

Explanation:

In the above-given question.

given that,

Kevin solved 166 + 25 using the totals below.

new models below = 6 + 5 = 11.

60 + 20 = 80.

100 + 0 = 100.

100 + 80 + 11 = 191.

Eureka Math Grade 2 Module 4 Lesson 30 Homework Answer Key

Question 1.

Kari and Marty solved 136 + 56.

Explain what is different about how Kari and Marty solved the problem.

Kari solved_____directly._____________________________________

__Marty _solved__totals__below___method.________________________________

__________________________________________

Answer:

Kari solved directly.

Marty solved the totals below the method.

Explanation:

In the above-given question.

given that,

Kari solved 136 + 56 using the direct method.

new models below = 6 + 6 = 12.

30 + 50 = 80.

100 + 0 = 100.

100 + 80 + 12 = 192.

Question 2.

Here is one way to solve 145 + 67. For (a), solve 145 + 67 another way.

Answer:

145 + 67 = 212.

Explanation:

In the above-given question.

given that,

5 + 7 = 12.

60 + 40 = 100.

100 + 0 = 100.

100 + 100 + 12 = 212.

b. Explain how the two ways to solve 145 + 67 are similar.

________________________________________

________________________________________

________________________________________

Answer:

Yes, the ways are similar.

Explanation:

In the above-given question.

given that,

some of them solved in the direct method.

some of them solved in the totals below method.

some of them solved in new place value method.

145 + 67 = 212.

Question 3.

Show another way to solve 142 + 39.

Answer:

2 + 9 = 11.

40 + 30 = 70.

100 + 0 = 100.

Explanation:

In the above-given question.

given that,

142 + 39.

2 + 9 = 11.

40 + 30 = 70.

100 + 0 = 100.

100 + 70 + 11 = 181.