Page 8 - 초등연산3-1정답QR용-재쇄

정답

27단계 65쪽 29단계 71쪽

① 336 ② 306 ③ 191 ④ 194 ① 12 / 12, 2, 6 / 12, 6, 2

② 3, 5 / 5, 3 ③ 8, 2 / 2, 8
27단계 66쪽 ④ 6, 8 / 8, 6 ⑤ 35 / 5, 7 / 7, 5

⑥ 4, 7 / 7, 4
① 108
458-123 ⑦ 27 / 27, 9, 3 / 27, 3, 9
⑧ 24 / 24, 6, 4 / 24, 4, 6

② 389
614-506
29단계 72쪽

③ 335 ① 7, 14 / 2, 14 ② 9, 36 / 4, 36
343-181
③ 7, 42 / 6, 42 ④ 4, 32 / 8, 32
⑤ 5 / 5, 15 / 5, 15 ⑥ 3 / 8, 24 / 8, 24
④ 348
842-453
⑦ 2 / 2, 18 / 2, 18 ⑧ 9 / 7, 63 / 7, 63

⑤ 162 30단계 73쪽
925-577
① 2, 5 / 5, 2

⑥ 338 ② 28 / 28, 4, 7 / 28, 7, 4
732-394
③ 56 / 56, 7, 8 / 56, 8, 7
④ 24 / 24, 8, 3 / 24, 3, 8

⑤ 6 / 6, 30 / 5, 30
⑥ 7 / 4, 7, 28 / 7, 4, 28

.
셋째 마당 나눗셈 ⑦ 3 / 9, 3, 27 / 3, 9, 27
⑧ 9 / 6, 9, 54 / 9, 6, 54
28단계 69쪽

① 2, 2 / 2 ② 4, 2 / 2 ③ 3, 2 / 2 30단계 74쪽

④ 5, 2 / 2 ⑤ 8, 4, 2 / 2 ⑥ 18, 6, 3 / 3
① 18Ö3=6 / 18Ö6=3
② 32 / 32Ö4=8 / 32Ö8=4
28단계 70쪽
③ 54 / 54Ö6=9 / 54Ö9=6
① 0 / 2, 3 ② 2, 4 ③ 12, 6, 2 ④ 42 / 42Ö7=6 / 42Ö6=7

④ 20, 5, 4 ⑤ 0 / 30, 6, 5 ⑥ 0 / 27, 9, 3 ⑤ 7*2=14 / 2*7=14
⑦ 0 / 32, 8, 4 ⑥ 8 / 2*8=16 / 8*2=16

148