Page 10 - 바빠교과서연산_1-2_정답

정답

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넷째 마당 덧셈과 뺄셈 (1) 37단계 89쪽

36단계 87쪽 ① 1 + 2 + 2 = 5 ⑤ 1 + 3 + 4 = 8
3 4
① 3 + 1 + 2 = 6 ⑤ 2 + 4 + 1 = 7
5 8
3 4 2 6
+ 1 + 2 + 4 + 1
② 3 + 1 + 1 = 5 ⑥ 2 + 3 + 3 = 8
4 6 6 7
4 5
② 2 + 2 + 1 = 5 ⑥ 5 + 1 + 2 = 8
5 8
2 4 5 6
+ 2 + 1 + 1 + 2
③ 5 + 1 + 2 = 8 ⑦ 2 + 4 + 3 = 9
4 5 6 8
6 6
③ 2 + 1 + 3 = 6 ⑦ 4 + 3 + 1 = 8
8 9
2 3 4 7
+ 1 + 3 + 3 + 1
④ 6 + 2 + 1 = 9 ⑧ 1 + 7 + 1 = 9
3 6 7 8
8 8
④ 3 + 2 + 2 = 7 ⑧ 6 + 0 + 3 = 9
9 9
3 5 6 6
+ 2 + 2 + 0 + 3
5 7 6 9 37단계 90쪽

① 7 ② 6 ③ 8 ④ 9 ⑤ 9
36단계 88쪽
⑥ 8 ⑦ 9 ⑧ 9 ⑨ 7 ⑩ 9
① 2 + 3 + 4 = 9 ⑤ 3 + 1 + 3 = 7 ⑪ 8
2 5 3 4
+ 3 + 4 + 1 + 3
5 9 4 7 38단계 91쪽

② 1 + 4 + 2 = 7 ⑥ 2 + 5 + 2 = 9 ① 5 - 2 - 2 = 1 ⑤ 7 - 3 - 2 = 2
1 5 2 7 5 3 7 4
+ 4 + 2 + 5 + 2 - 2 - 2 - 3 - 2
5 7 7 9 3 1 4 2
③ 3 + 5 + 1 = 9 ⑦ 4 + 2 + 3 = 9 ② 6 - 3 - 2 = 1 ⑥ 8 - 1 - 4 = 3
3 8 4 6 6 3 8 7
+ 5 + 1 + 2 + 3 - 3 - 2 - 1 - 4
8 9 6 9 3 1 7 3

④ 5 + 2 + 1 = 8 ⑧ 3 + 3 + 2 = 8 ③ 7 - 4 - 1 = 2 ⑦ 8 - 2 - 1 = 5
5 7 3 6 7 3 8 6
+ 2 + 1 + 3 + 2 - 4 - 1 - 2 - 1
7 8 6 8 3 2 6 5

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