Page 8 - 바빠 교과서 연산_2-1_정답

정답

26단계 64쪽 29단계 70쪽

① 6, 8, 14, 64 ② 2, 9, 11, 71 ①

③ 8, 4, 12, 62 ④ 7, 6, 13, 83 35 9
+ 44
⑤ 20, 50, 70, 81 ⑥ 30, 40, 70, 84 37 8
⑦ 50, 30, 80, 92 ⑧ 60, 20, 80, 97
②

27단계 65쪽 27 28
+
18 25 43
① 5, 46, 51 ② 7, 53, 60 ③ 9, 9, 61
④ 8, 8, 63 ⑤ 40, 65, 74 ⑥ 40, 84, 92 ③

⑦ 50, 7, 95 ⑧ 30, 9, 97 62 89
+
121
58 59
27단계 66쪽

① 7, 7, 72 ② 9, 9, 72 ③ 8, 62, 70

④ 6, 85, 91 ⑤ 9, 9, 95 ⑥ 7, 7, 81
⑦ 10, 76, 84 ⑧ 10, 89, 96
.
셋째 마당 뺄셈
28단계 67쪽
30단계 73쪽
① 23, 20, 43 ② 53, 30, 83 ③ 2, 40, 64
① 13 ② 21 ③ 32 ④ 45 ⑤ 56
④ 4, 50, 81 ⑤ 46, 30, 76 ⑥ 51, 40, 91
⑥ 17 ⑦ 29 ⑧ 25 ⑨ 34 ⑩ 48
⑦ 4, 60, 93 ⑧ 5, 70, 94
⑪ 36 ⑫ 46 ⑬ 57 ⑭ 69 ⑮ 74

28단계 68쪽
30단계 74쪽
① 40, 40, 70 ② 13, 13, 53 ③ 21, 50, 71
① 24 ② 35 ③ 19 ④ 27 ⑤ 36
④ 35, 60, 95 ⑤ 3, 44, 84 ⑥ 5, 31, 81
⑥ 23 ⑦ 39 ⑧ 58 ⑨ 47 ⑩ 64
⑦ 2, 70, 93 ⑧ 3, 80, 96
⑪ 38 ⑫ 59 ⑬ 48 ⑭ 76 ⑮ 89

29단계 69쪽
31단계 75쪽
① 32 ② 61 ③ 82 ④ 177
① 12 ② 45 ③ 18 ④ 29 ⑤ 33

⑥ 16 ⑦ 35 ⑧ 24 ⑨ 49 ⑩ 58
⑪ 36 ⑫ 59 ⑬ 62 ⑭ 79 ⑮ 84

146