Page 7 - 바빠 교과서 연산_5-1_정답

정답

19단계 50쪽 22단계 56쪽

① 12, 24 / 12 ② 6, 12 / 6 ① 280 ② 108 ③ 216 ④ 88

③ 24, 48 / 24 ④ 20, 40 / 20 ⑤ 480 ⑥ 168
⑤ 60, 120 / 60 ⑥ 60, 120 / 60
⑦ 36, 72 / 36 ⑧ 42, 84 / 42 23단계 57쪽

⑨ 54, 108 / 54
① 2, 4, 8 ② 6 ③ 8 ④ 12

20단계 51쪽 23단계 58쪽

① 12 ② 2, 40 ③ 3, 2, 60

④ 11, 3, 66 ⑤ 2, 2, 84 ⑥ 2, 3, 36 6 1 3 9 8 3 6
⑦ 3, 2, 3, 54 ⑧ 2, 5, 2, 40

20단계 52쪽

① 3, 5 / 60 ② 3, 7 / 126 ③ 3, 2 / 60
④ 2, 2 / 56 ⑤ 3, 13 / 78 ⑥ 7, 3 / 210
.
셋째 마당 약분과 통분
⑦ 5, 3, 5 / 60 ⑧ 2, 2, 3 / 48
24단계 61쪽

21단계 53쪽 ① 2, 3, 4, 5 ② 6, 9, 12, 15

① 3, 18 ② 2, 7, 70 ③ 12, 18, 24, 30 ④ 8, 12, 16, 20
③ 2, 4, 5, 80 ④ 3, 2, 3, 36 ⑤ 16, 24, 32, 40 ⑥ 18, 27, 36, 45

⑤ 7, 1, 5, 70 ⑥ 5, 2, 3, 90
⑦ 5, 5, 3, 1, 75 ⑧ 2, 7, 2, 3, 84 24단계 62쪽

4
① 4, 6, 8 ② 2, 3,
21단계 54쪽 16
6 9 12 12 18 24
,
,
,
,
① 70 ② 66 ③ 90 ④ 140 ③ 10 15 20 ④ 14 21 28
⑤ 108 ⑥ 84 ⑦ 180 ⑧ 96 10 15 20 8 12 16
⑤ , , ⑥ , ,
16 24 32 18 27 36
22단계 55쪽 ⑦ 14 21 28 ⑧ 12 18 24
,
,
,
,
20 30 40 22 33 44
① 63 ② 72 ③ 180 ④ 84 10 15 20 8 12 16
⑨ , , ⑩ , ,
⑤ 350 ⑥ 126 ⑦ 195 ⑧ 156 24 36 48 26 39 52

141