Page 7 - 바빠 교과서 연산_5-2_정답

정답

19단계 50쪽 21단계 54쪽

1 1 3 1 1 1 1
① 5, 25, 12 ② 13 ③ 15 ① ② ③ ④
2 3 4 8 9 18 28
2 3 7 5 1 1 1 1
④ 8 ⑤ 9 ⑥ 6 ⑦ 8 ⑤ ⑥ ⑦ ⑧
5 7 8 9 25 48 45 54
3 13 4 2 1 1 1 1
⑧ 7 ⑨ 4 ⑩ 4 ⑪ 6 ⑨ ⑩ ⑪ ⑫
11 14 19 13 70 88 60 45
15
⑫ 5
17
22단계 55쪽
2 3 6
20단계 51쪽 ① 1, 5 / ② ③
15 28 25
1 9 25 16 9
① 5, 5, 20 ② 3, 21, 10 ④ ⑤ ⑥ ⑦
2 20 48 35 40
1 1 3 12 35 27 10
③ 34 ④ 8 ⑤ 7 ⑥ 4 ⑧ ⑨ ⑩ ⑪
3 2 5 49 64 50 63
2 1 1 21
⑦ 21 ⑧ 33 ⑨ 27 ⑩ 12 ⑫
3 3 2 40
1 6
⑪ 25 ⑫ 12
3 7
22단계 56쪽
4 7 21 8
20단계 52쪽 ① ② ③ ④
21 81 80 55
1 27 16 27 35
① 14 ② 24 ③ 12 ④ 39 ⑤ ⑥ ⑦ ⑧
2 70 39 100 72
1 2 1 1 36 27 44 35
⑤ 32 ⑥ 14 ⑦ 8 ⑧ 33 ⑨ ⑩ ⑪ ⑫
2 3 2 3 77 56 75 72
1 1 3
⑨ 34 ⑩ 9 ⑪ 19 ⑫ 10
2 5 4
23단계 57쪽
3 15
21단계 53쪽 ① 1, 2 / ② 3, 4 /
10 28
1 1 7 3 4 10
① 3, 6 ② 20 ③ ④ ③ ④ ⑤ ⑥
12 14 15 8 15 21
1 1 1 1 3 15 4 9
⑤ ⑥ ⑦ ⑧ ⑦ ⑧ ⑨ ⑩
15 16 30 56 20 22 35 32
1 1 1 1 10 3
⑨ ⑩ ⑪ ⑫ ⑪ ⑫
36 72 22 30 33 28

137