Page 14 - 바빠 교과서 연산_3-1_정답_2쇄

정답

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다섯째 마당 길이와 시간 55단계 128쪽

53단계 123쪽 ① 3, 500 ② 3, 200 ③ 1, 600
④ 2, 600 ⑤ 5, 900 ⑥ 3, 600
① 10 ② 30 ③ 23 ④ 48
⑦ 3, 600 ⑧ 4, 300 ⑨ 5, 950
⑤ 53 ⑥ 61 ⑦ 1, 7 ⑧ 2, 4
⑩ 5, 750
⑨ 3, 8 ⑩ 4, 7 ⑪ 5, 9 ⑫ 6, 5

56단계 129쪽
53단계 124쪽
① 60 ② 120 ③ 300 ④ 420
① 2000 ② 5000 ③ 5300
⑤ 90 ⑥ 130 ⑦ 195 ⑧ 260
④ 4800 ⑤ 7500 ⑥ 8020
⑨ 325 ⑩ 410 ⑪ 510 ⑫ 585
⑦ 2, 700 ⑧ 3, 400 ⑨ 6, 700
⑩ 8, 300 ⑪ 1, 50 ⑫ 9, 3
56단계 130쪽

54단계 125쪽 ① 2 ② 3 ③ 1, 30

④ 1, 40 ⑤ 2, 5 ⑥ 2, 30
① 3, 8 ② 7, 9 ③ 5, 3 ④ 7, 2
⑦ 3, 20 ⑧ 4, 10 ⑨ 5, 10
⑤ 8, 2 ⑥ 7, 1 ⑦ 6, 2 ⑧ 8, 7
⑩ 6, 40 ⑪ 7, 30 ⑫ 8, 20
⑨ 6, 3 ⑩ 8, 6

57단계 131쪽
54단계 126쪽
① 5, 25 ② 7, 45 ③ 8, 32
① 3, 600 ② 5, 900 ③ 8, 300
④ 11, 50 ⑤ 12, 50 ⑥ 26, 30
④ 7, 200 ⑤ 7, 100 ⑥ 4, 500
⑦ 32, 32 ⑧ 53, 40 ⑨ 52, 45
⑦ 9, 600 ⑧ 8, 100 ⑨ 8, 300
⑩ 55, 42
⑩ 6, 500

57단계 132쪽
55단계 127쪽

① 4, 22 ② 3, 38
① 4, 3 ② 5, 4 ③ 2, 9 ④ 4, 6
③ 8, 40, 24 ④ 6, 23, 45
⑤ 3, 8 ⑥ 5, 7 ⑦ 2, 4 ⑧ 2, 7
⑤ 10, 20, 45 ⑥ 10, 50
⑨ 4, 9 ⑩ 3, 7
⑦ 12, 35 ⑧ 7, 42, 40

⑨ 8, 34, 32 ⑩ 21, 55, 58

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