Page 5 - 바빠교과서연산_1-2_정답
P. 5
정답과 풀이
정답
15단계 41쪽 ⑥ 99 ⑦ 87 ⑧ 89 ⑨ 79 ⑩ 68
⑪ 87 ⑫ 98
① 48 ② 66 ③ 64 ④ 89 ⑤ 76
⑥ 69 ⑦ 97 ⑧ 69 ⑨ 85 ⑩ 79
17단계 46쪽
⑪ 98 ⑫ 99
① 47 ② 54 ③ 65 ④ 76 ⑤ 68
15단계 42쪽 ⑥ 75 ⑦ 85 ⑧ 86 ⑨ 64 ⑩ 88
⑪ 87 ⑫ 99
① 1 2 ⑤ 3 4 ⑨ 3 2
+ 3 3 + 2 2 + 4 5
18단계 47쪽
4 5 5 6 7 7
② 4 2 ⑥ 4 7 ⑩ 5 1 ① 76 ② 59 ③ 68 ④ 98 ⑤ 95
+ 2 4 + 3 1 + 3 4 ⑥ 88 ⑦ 78 ⑧ 96 ⑨ 84 ⑩ 89
6 6 7 8 8 5
⑪ 88
③ 3 6 ⑦ 6 3 ⑪ 7 0
+ 3 2 + 2 3 + 2 6
18단계 48쪽
6 8 8 6 9 6
① ③
④ 5 3 ⑧ 5 5 ⑫ 6 1
+ 4 2 + 4 3 + 3 8 84 79
9 5 9 8 9 9 33 51 23 56
13 20 31 12 11 45
16단계 43쪽
② ④
① 70 ② 49 ③ 58 ④ 68 ⑤ 69
98 99
⑥ 76 ⑦ 87 ⑧ 83 ⑨ 77 ⑩ 89 52 46 62 37
⑪ 99 20 32 14 42 20 17
16단계 44쪽
19단계 49쪽
① 46 ② 78 ③ 76 ④ 69 ⑤ 88
① 24, 12, 36 ② 12, 27
⑥ 74 ⑦ 85 ⑧ 87 ⑨ 58 ⑩ 98
③ 22, 39 ④ 16, 29
⑪ 79 ⑫ 89 ⑬ 86 ⑭ 86
⑤ 23, 37 ⑥ 18, 21, 39
17단계 45쪽
19단계 50쪽
① 75 ② 57 ③ 79 ④ 67 ⑤ 48
① ⑴ 24, 32, 56 ⑵ 32, 35, 67 ⑶ 24, 15, 39
147
