
脱式计算.(能简算的要简算)18+215+7811-710-3101112-(16+18)73-45-15
脱式计算.(能简算的要简算)18+215+7811-710-3101112-(16+18)73-45-15....
脱式计算.(能简算的要简算)18+215+7811-710-3101112-(16+18)73-45-15.
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1 |
8 |
2 |
15 |
7 |
8 |
=
1 |
8 |
7 |
8 |
2 |
15 |
=1+
2 |
15 |
=1
2 |
15 |
(2)11-
7 |
10 |
3 |
10 |
=11-(
7 |
10 |
3 |
10 |
=11-1
=10;
(3)
11 |
12 |
1 |
6 |
1 |
8 |
=
11 |
12 |
7 |
24 |
=
5 |
8 |
(4)
7 |
3 |
4 |
5 |
1 |
5 |
=
7 |
3 |
4 |
5 |
1 |
5 |
=
7 |
3 |
=
4 |
3 |
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