脫式計算.(寫出必要的計算過程,能簡算的要簡算)
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45×(
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(
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[1-(
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|
7 |
5 |
2 |
5 |
1 |
9 |
7 |
5 |
2 |
5 |
1 |
9 |
1 |
9 |
1 |
9 |
2 |
3 |
3 |
5 |
5 |
9 |
2 |
3 |
3 |
5 |
5 |
9 |
1 |
6 |
3 |
4 |
2 |
3 |
1 |
6 |
1 |
2 |
1 |
6 |
1 |
4 |
5 |
12 |
3 |
4 |
3 |
4 |
5 |
6 |
9 |
8 |
3 |
4 |
5 |
8 |
9 |
8 |
3 |
4 |
8 |
9 |
5 |
8 |
8 |
9 |
2 |
3 |
5 |
9 |
1 |
9 |
1 |
6 |
8 |
15 |
3 |
4 |
21 |
30 |
3 |
4 |
9 |
30 |
3 |
4 |
2 |
5 |
5 |
12 |
3 |
8 |
7 |
9 |
1 |
2 |
5 |
12 |
3 |
8 |
5 |
18 |
5 |
12 |
5 |
48 |
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