﻿[Script Info] Title: [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text Dialogue: 0,0:00:00.47,0:00:04.71,Default,,0000,0000,0000,,음수의 덧셈과 뺄셈에 \N대해서 배워볼까요? Dialogue: 0,0:00:04.71,0:00:06.85,Default,,0000,0000,0000,,시작해봅시다 Dialogue: 0,0:00:06.85,0:00:08.51,Default,,0000,0000,0000,,음수란 무엇일까요? Dialogue: 0,0:00:08.52,0:00:12.08,Default,,0000,0000,0000,,수직선을 \N그려 보겠습니다 Dialogue: 0,0:00:12.08,0:00:13.30,Default,,0000,0000,0000,,잘 그리지는 못했지만 Dialogue: 0,0:00:13.30,0:00:15.19,Default,,0000,0000,0000,,괜찮나요? Dialogue: 0,0:00:15.19,0:00:17.59,Default,,0000,0000,0000,,우리는 보통 양수를 \N더 많이 사용하는데요 Dialogue: 0,0:00:17.59,0:00:24.74,Default,,0000,0000,0000,,0에서 1, 2, 3, 4... \N계속할 수 있겠죠 Dialogue: 0,0:00:24.74,0:00:28.55,Default,,0000,0000,0000,,2 + 2가 얼마냐고 물으면 Dialogue: 0,0:00:28.55,0:00:30.90,Default,,0000,0000,0000,,2에서 2를 더해주고 \N4를 얻게 되겠죠 Dialogue: 0,0:00:30.90,0:00:32.57,Default,,0000,0000,0000,,그렇죠? Dialogue: 0,0:00:32.57,0:00:34.20,Default,,0000,0000,0000,,수직선에 그린다면 Dialogue: 0,0:00:34.20,0:00:36.13,Default,,0000,0000,0000,,2 + 2는 4 입니다 Dialogue: 0,0:00:36.14,0:00:38.37,Default,,0000,0000,0000,,2 - 1나 Dialogue: 0,0:00:38.37,0:00:40.02,Default,,0000,0000,0000,,3 - 2는 Dialogue: 0,0:00:40.02,0:00:43.47,Default,,0000,0000,0000,,3에서 시작해서 2를 뺀 후 Dialogue: 0,0:00:43.47,0:00:45.43,Default,,0000,0000,0000,,수직선에서 1에 닿을 것입니다 Dialogue: 0,0:00:45.43,0:00:51.25,Default,,0000,0000,0000,,마찬가지로 2 + 2 = 4\N3 - 2는 1이에요 Dialogue: 0,0:00:51.25,0:00:52.98,Default,,0000,0000,0000,,너무 쉽죠 Dialogue: 0,0:00:52.99,0:00:58.14,Default,,0000,0000,0000,,그럼 1 - 3 은 \N무엇일까요? Dialogue: 0,0:00:58.15,0:01:00.10,Default,,0000,0000,0000,,사실 푸는 건 똑같아요 Dialogue: 0,0:01:00.10,0:01:06.24,Default,,0000,0000,0000,,1 에서 시작해서 0보다 \N작은쪽으로 이동 할거예요 Dialogue: 0,0:01:06.24,0:01:07.39,Default,,0000,0000,0000,,0보다 작은 숫자가 \N무엇일까요? Dialogue: 0,0:01:07.39,0:01:14.91,Default,,0000,0000,0000,,0의 왼쪽으로 \N-1, -2, -3 이렇게 계속되겠죠 Dialogue: 0,0:01:14.93,0:01:20.91,Default,,0000,0000,0000,,1에서 시작해서 \N3을 빼면 Dialogue: 0,0:01:20.91,0:01:25.74,Default,,0000,0000,0000,,왼쪽으로 세 칸 이동하고 \N-2에서 멈추게 됩니다 Dialogue: 0,0:01:25.74,0:01:30.28,Default,,0000,0000,0000,,따라서 1 - 3은 \N-2와 같습니다 Dialogue: 0,0:01:30.28,0:01:33.16,Default,,0000,0000,0000,,이미 잘 알고 있죠? Dialogue: 0,0:01:33.16,0:01:37.54,Default,,0000,0000,0000,,선생님이 "오늘 정말 춥다. \N지금은 1도야" 하면 Dialogue: 0,0:01:37.54,0:01:40.73,Default,,0000,0000,0000,,"내일은 3도 더 추워진데" \N라고 말하면 Dialogue: 0,0:01:40.73,0:01:43.37,Default,,0000,0000,0000,,무슨 말인지 \N이해할 것입니다 Dialogue: 0,0:01:43.37,0:01:45.49,Default,,0000,0000,0000,,내일 기온이 \N영하 2도라는 것입니다 Dialogue: 0,0:01:45.50,0:01:48.21,Default,,0000,0000,0000,,이런식으로 음수가 쓰여요 Dialogue: 0,0:01:48.21,0:01:51.42,Default,,0000,0000,0000,,만약 숫자가 커지면 Dialogue: 0,0:01:51.42,0:01:58.01,Default,,0000,0000,0000,,영하 50도는 영하 20도보다 춥죠? Dialogue: 0,0:01:58.01,0:02:01.54,Default,,0000,0000,0000,,-50은 -20보다 \N작은 숫자입니다 Dialogue: 0,0:02:01.54,0:02:04.88,Default,,0000,0000,0000,,0에서 왼쪽으로 \N더 멀리 떨어져 있기 때문이에요 Dialogue: 0,0:02:04.89,0:02:07.27,Default,,0000,0000,0000,,이해가 되나요? Dialogue: 0,0:02:07.27,0:02:10.66,Default,,0000,0000,0000,,50은 20보다 \N큰 숫자라고 생각할 수 있지만 Dialogue: 0,0:02:10.66,0:02:13.63,Default,,0000,0000,0000,,-50은 50의 반대 숫자예요 Dialogue: 0,0:02:13.63,0:02:16.07,Default,,0000,0000,0000,,문제를 풀어봅시다 Dialogue: 0,0:02:16.07,0:02:19.14,Default,,0000,0000,0000,,수직선을 다시 \N그려보겠습니다 Dialogue: 0,0:02:19.16,0:02:26.51,Default,,0000,0000,0000,,5 - 12 을 해봅시다 Dialogue: 0,0:02:26.52,0:02:29.67,Default,,0000,0000,0000,,어떻게 될까요? Dialogue: 0,0:02:29.67,0:02:33.73,Default,,0000,0000,0000,,선을 그린 다음에 Dialogue: 0,0:02:33.73,0:02:44.68,Default,,0000,0000,0000,,5 - 12 = ? Dialogue: 0,0:02:44.68,0:02:48.59,Default,,0000,0000,0000,,왼쪽부터 써볼까요? Dialogue: 0,0:02:48.59,0:02:50.44,Default,,0000,0000,0000,,-10 Dialogue: 0,0:02:50.44,0:02:52.03,Default,,0000,0000,0000,,-9 Dialogue: 0,0:02:52.03,0:02:54.23,Default,,0000,0000,0000,,-8 Dialogue: 0,0:02:54.23,0:02:56.17,Default,,0000,0000,0000,,-7\N Dialogue: 0,0:02:56.17,0:02:57.61,Default,,0000,0000,0000,,-6 Dialogue: 0,0:02:57.61,0:02:59.66,Default,,0000,0000,0000,,-5 Dialogue: 0,0:02:59.66,0:03:04.47,Default,,0000,0000,0000,,-4, -3, -2, -1 Dialogue: 0,0:03:04.49,0:03:10.27,Default,,0000,0000,0000,,0, 1, 2, 3, 4 \N Dialogue: 0,0:03:10.27,0:03:12.14,Default,,0000,0000,0000,,5까지 썼어요 Dialogue: 0,0:03:12.14,0:03:14.50,Default,,0000,0000,0000,,수직선을 조금 더 길게 그릴게요 Dialogue: 0,0:03:14.50,0:03:18.36,Default,,0000,0000,0000,,5 - 12를\N5에서 시작합니다 Dialogue: 0,0:03:18.36,0:03:21.49,Default,,0000,0000,0000,,여기서 왼쪽으로 \N12칸 움직일건데 Dialogue: 0,0:03:21.49,0:03:23.44,Default,,0000,0000,0000,,12를 빼기 때문이에요 Dialogue: 0,0:03:23.44,0:03:28.40,Default,,0000,0000,0000,,1, 2, 3, 4, 5, 6, 7 Dialogue: 0,0:03:28.40,0:03:33.96,Default,,0000,0000,0000,,8, 9, 10, 11, 12 Dialogue: 0,0:03:33.96,0:03:37.52,Default,,0000,0000,0000,,-7에서 멈춥니다 Dialogue: 0,0:03:37.52,0:03:40.30,Default,,0000,0000,0000,,재미있는 사실이 있네요 Dialogue: 0,0:03:40.30,0:03:46.12,Default,,0000,0000,0000,,양수에서도 12 - 5를 하면\N7이 나오잖아요 Dialogue: 0,0:03:46.12,0:03:48.62,Default,,0000,0000,0000,,그렇죠? Dialogue: 0,0:03:48.62,0:03:52.69,Default,,0000,0000,0000,,왜 12 -5 = 7 일까요? Dialogue: 0,0:03:52.70,0:03:59.28,Default,,0000,0000,0000,,두 가지 방법으로 \N생각해 볼 수 있는데요 Dialogue: 0,0:03:59.28,0:04:03.60,Default,,0000,0000,0000,,여기서는 5 -12 = -7입니다 Dialogue: 0,0:04:03.60,0:04:05.60,Default,,0000,0000,0000,,수직선에서 숫자들이 \N서로 떨어져 있죠 Dialogue: 0,0:04:05.60,0:04:07.50,Default,,0000,0000,0000,,작은 숫자에서 시작해봐요 Dialogue: 0,0:04:07.50,0:04:11.63,Default,,0000,0000,0000,,헷갈리나요? Dialogue: 0,0:04:11.63,0:04:18.09,Default,,0000,0000,0000,,5 - 12는 -7과 같습니다 Dialogue: 0,0:04:18.09,0:04:19.44,Default,,0000,0000,0000,,다음 문제를 볼게요 Dialogue: 0,0:04:19.44,0:04:25.98,Default,,0000,0000,0000,,-3 + 5는 무엇일까요? Dialogue: 0,0:04:25.98,0:04:28.21,Default,,0000,0000,0000,,다시 수직선에 그려봅시다 Dialogue: 0,0:04:28.21,0:04:31.82,Default,,0000,0000,0000,,-3 + 5 = ? Dialogue: 0,0:04:31.82,0:04:34.11,Default,,0000,0000,0000,,오른쪽으로 5칸 이동합시다 Dialogue: 0,0:04:34.11,0:04:38.31,Default,,0000,0000,0000,,1, 2, 3, 4, 5 Dialogue: 0,0:04:38.31,0:04:42.98,Default,,0000,0000,0000,,2가 되었네요\N2에서 멈추었어요 Dialogue: 0,0:04:42.98,0:04:48.83,Default,,0000,0000,0000,,따라서 -3 + 5 = 2입니다 Dialogue: 0,0:04:48.83,0:04:54.38,Default,,0000,0000,0000,,어때요?\N5 - 3 = 2가 되는데요 Dialogue: 0,0:04:54.38,0:05:00.55,Default,,0000,0000,0000,,5 - 3 와 \N5 + (-3) 이 같아요 Dialogue: 0,0:05:00.55,0:05:04.19,Default,,0000,0000,0000,,또 -3 + 5도 같아요 Dialogue: 0,0:05:04.21,0:05:07.77,Default,,0000,0000,0000,,음수를 쉽게 계산하는 방법은 Dialogue: 0,0:05:07.77,0:05:11.66,Default,,0000,0000,0000,,보통의 덧셈 또는 \N뺄셈처럼 계산하면 됩니다 Dialogue: 0,0:05:11.66,0:05:14.35,Default,,0000,0000,0000,,그리고 뺄셈을 할 때는 Dialogue: 0,0:05:14.35,0:05:17.21,Default,,0000,0000,0000,,0의 왼쪽으로 이동할 것입니다 Dialogue: 0,0:05:17.21,0:05:19.19,Default,,0000,0000,0000,,다른 문제를 볼까요? Dialogue: 0,0:05:19.19,0:05:26.18,Default,,0000,0000,0000,,그럼 2 빼기 -3은 무엇일까요? Dialogue: 0,0:05:26.18,0:05:32.40,Default,,0000,0000,0000,,생각해 볼까요? Dialogue: 0,0:05:32.40,0:05:36.21,Default,,0000,0000,0000,,음수 부호가 두 개가 \N있으면 양수가 돼요 Dialogue: 0,0:05:36.21,0:05:43.27,Default,,0000,0000,0000,,그래서 2 + 3이 되고 \N답이 5가 나옵니다 Dialogue: 0,0:05:43.27,0:05:46.43,Default,,0000,0000,0000,,비슷한 문제로 Dialogue: 0,0:05:46.43,0:05:52.94,Default,,0000,0000,0000,,-7 - (-2) 는\N무엇일까요? Dialogue: 0,0:05:52.94,0:05:58.21,Default,,0000,0000,0000,,이는 -7 + 2와 같겠죠 Dialogue: 0,0:05:58.21,0:06:00.69,Default,,0000,0000,0000,,수직선에서 -7에서 시작해서 Dialogue: 0,0:06:00.69,0:06:03.77,Default,,0000,0000,0000,,오른쪽으로 두 칸 이동하면 돼요 Dialogue: 0,0:06:03.77,0:06:06.39,Default,,0000,0000,0000,,오른쪽으로 한 칸 움직이면 -6 Dialogue: 0,0:06:06.39,0:06:10.96,Default,,0000,0000,0000,,한 칸 더 움직이면 -5입니다 Dialogue: 0,0:06:10.96,0:06:14.51,Default,,0000,0000,0000,,이해되죠?\N왜냐하면 -7 + 2의 답은 Dialogue: 0,0:06:14.51,0:06:16.61,Default,,0000,0000,0000,,2 - 7과 같기 때문입니다 Dialogue: 0,0:06:16.61,0:06:19.87,Default,,0000,0000,0000,,지금 만약 영상 2도이고\N추워져서 7도가 떨어진다고 하면 Dialogue: 0,0:06:19.87,0:06:21.88,Default,,0000,0000,0000,,영하 5도가 되겠죠 Dialogue: 0,0:06:21.88,0:06:23.29,Default,,0000,0000,0000,,더 해볼까요? Dialogue: 0,0:06:23.29,0:06:25.31,Default,,0000,0000,0000,,여러 문제를 풀어보고 \N연습하다 보면 Dialogue: 0,0:06:25.31,0:06:28.99,Default,,0000,0000,0000,,잘하게 될 거에요 Dialogue: 0,0:06:28.99,0:06:30.76,Default,,0000,0000,0000,,연습해 봅시다 Dialogue: 0,0:06:30.76,0:06:36.25,Default,,0000,0000,0000,,-7 - 3은 Dialogue: 0,0:06:36.25,0:06:40.99,Default,,0000,0000,0000,,-7에서 왼쪽으로 \N세 칸 이동하면 되요 Dialogue: 0,0:06:40.99,0:06:45.38,Default,,0000,0000,0000,,그럼 -10에서 멈추겠죠? Dialogue: 0,0:06:45.38,0:06:48.78,Default,,0000,0000,0000,,7 + 3 은 Dialogue: 0,0:06:48.78,0:06:51.27,Default,,0000,0000,0000,,수직선에서 0의 \N오른쪽에 있는 7에서 Dialogue: 0,0:06:51.27,0:06:54.17,Default,,0000,0000,0000,,다시 오른쪽으로 세 칸 가서\N10에서 멈추겠죠 Dialogue: 0,0:06:54.17,0:06:57.80,Default,,0000,0000,0000,,비슷하게 0의 왼쪽에 있는 \N7에서 왼쪽으로 세 칸 가면 Dialogue: 0,0:06:57.80,0:06:58.88,Default,,0000,0000,0000,,-10에서 멈추니까 \N답은 -10입니다 Dialogue: 0,0:06:58.88,0:07:00.03,Default,,0000,0000,0000,,알겠나요? Dialogue: 0,0:07:00.03,0:07:01.55,Default,,0000,0000,0000,,지금은 헷갈리겠지만 Dialogue: 0,0:07:01.55,0:07:04.22,Default,,0000,0000,0000,,연습을 많이 하면 \N분명 도움이 될 거에요 Dialogue: 0,0:07:04.22,0:07:08.91,Default,,0000,0000,0000,,그럼 3 - (-3)을 해봅시다 Dialogue: 0,0:07:08.91,0:07:12.07,Default,,0000,0000,0000,,여기에 뺄셈 기호들이 \N서로 소거되므로 Dialogue: 0,0:07:12.07,0:07:14.66,Default,,0000,0000,0000,,6과 같습니다 Dialogue: 0,0:07:14.66,0:07:17.23,Default,,0000,0000,0000,,그럼 3 - 3은 뭘까요? Dialogue: 0,0:07:17.23,0:07:20.19,Default,,0000,0000,0000,,아주 쉽죠\N답은 0이죠 Dialogue: 0,0:07:20.19,0:07:23.97,Default,,0000,0000,0000,,그럼 -3 - 3은 \N어떻게 될까요? Dialogue: 0,0:07:23.97,0:07:28.77,Default,,0000,0000,0000,,-3보다 3 더 작은 수겠죠 \N답은 -6 입니다 Dialogue: 0,0:07:28.77,0:07:33.56,Default,,0000,0000,0000,,-3 - (-3)은 \N무엇일까요? Dialogue: 0,0:07:33.56,0:07:35.98,Default,,0000,0000,0000,,여기보세요 Dialogue: 0,0:07:35.98,0:07:39.56,Default,,0000,0000,0000,,뺄셈 기호들이 소거되니까 Dialogue: 0,0:07:39.56,0:07:41.25,Default,,0000,0000,0000,,뒤의 -3은 +3이 되고 Dialogue: 0,0:07:41.25,0:07:43.95,Default,,0000,0000,0000,,3에서 왼쪽으로 \N세 칸 움직이면 Dialogue: 0,0:07:43.95,0:07:45.34,Default,,0000,0000,0000,,0 에 멈추게 되죠 Dialogue: 0,0:07:45.34,0:07:47.63,Default,,0000,0000,0000,,이해되죠? Dialogue: 0,0:07:47.63,0:07:49.44,Default,,0000,0000,0000,,다시 한 번 해봅시다 Dialogue: 0,0:07:49.44,0:07:53.19,Default,,0000,0000,0000,,-3 - (-3) = ? Dialogue: 0,0:07:53.19,0:07:56.15,Default,,0000,0000,0000,,어떤 음수에서 같은 값의 음수를 \N빼면 0이 돼요, 그렇죠? Dialogue: 0,0:07:56.15,0:07:58.10,Default,,0000,0000,0000,,답은 0이에요 Dialogue: 0,0:07:58.10,0:08:05.29,Default,,0000,0000,0000,,뺄셈 기호가 다른 뺄셈 기호랑 만나면 \N없어지는걸 알겠나요? Dialogue: 0,0:08:05.29,0:08:08.07,Default,,0000,0000,0000,,더 연습해 봅시다 Dialogue: 0,0:08:08.07,0:08:11.18,Default,,0000,0000,0000,,12 - 13을 해봅시다 Dialogue: 0,0:08:11.18,0:08:12.95,Default,,0000,0000,0000,,이 문제는 쉽네요 Dialogue: 0,0:08:12.95,0:08:18.00,Default,,0000,0000,0000,,12 - 12 = 0 이니까 \N12 - 13 = -1 이겠죠? Dialogue: 0,0:08:18.00,0:08:20.97,Default,,0000,0000,0000,,0에서 왼쪽으로 \N한 칸 더 가야 하기 때문이에요 Dialogue: 0,0:08:20.97,0:08:24.74,Default,,0000,0000,0000,,8 - 5를 해봅시다 Dialogue: 0,0:08:24.74,0:08:27.55,Default,,0000,0000,0000,,그냥 뺄셈이죠 \N답은 3 입니다 Dialogue: 0,0:08:27.55,0:08:29.89,Default,,0000,0000,0000,,그럼 5 - 8은? Dialogue: 0,0:08:29.89,0:08:32.37,Default,,0000,0000,0000,,수직선 3에서 \N왼쪽으로 0까지 간 후 Dialogue: 0,0:08:32.37,0:08:35.37,Default,,0000,0000,0000,,왼쪽으로 세 칸 더 가면 \N-3 겠네요 Dialogue: 0,0:08:35.37,0:08:38.57,Default,,0000,0000,0000,,수직선에 그리면 Dialogue: 0,0:08:38.57,0:08:42.17,Default,,0000,0000,0000,,0 그리고 여기는 5 Dialogue: 0,0:08:42.19,0:08:46.16,Default,,0000,0000,0000,,5에서 왼쪽으로 \N8칸 이동하면 Dialogue: 0,0:08:46.17,0:08:48.33,Default,,0000,0000,0000,,-3에서 멈추게 되죠 Dialogue: 0,0:08:48.33,0:08:51.18,Default,,0000,0000,0000,,지금까지 여러 문제들을 \N연습해 보았는데요 Dialogue: 0,0:08:51.18,0:08:54.30,Default,,0000,0000,0000,,음수의 뺄셈을 잘 이해되었나요? Dialogue: 0,0:08:54.30,0:08:56.12,Default,,0000,0000,0000,,아직도 이해가 좀 어렵다면 \N Dialogue: 0,0:08:56.12,0:08:57.40,Default,,0000,0000,0000,,동영상을 여러 번 보고\N복습하길 바래요 Dialogue: 0,0:08:57.40,0:09:00.40,Default,,0000,0000,0000,,잘 모르겠으면\N수직선을 그려보세요 Dialogue: 0,0:09:00.40,0:09:02.99,Default,,0000,0000,0000,,이해하는 데 도움이 될거에요 Dialogue: 0,0:09:02.99,0:09:06.02,Default,,0000,0000,0000,,문제를 더 풀어보고 \N다른 영상도 봐서 Dialogue: 0,0:09:06.03,0:09:08.32,Default,,0000,0000,0000,,많이 헷갈리지 \N않기를 바랍니다 Dialogue: 0,0:09:08.34,0:09:12.36,Default,,0000,0000,0000,,특히 이 부분을 말이에요 Dialogue: 0,0:09:12.36,0:09:15.40,Default,,0000,0000,0000,,즐겁게 수학 공부하기를! \N안녕히 계세요