怎样简便怎样算.23+14+3438+14+181-35-2597+58+118+57(35+112)+(25+512)+(25+512).-数学
=(
3 |
8 |
1 |
8 |
1 |
4 |
=
1 |
2 |
1 |
4 |
=
3 |
4 |
(3)1-
3 |
5 |
2 |
5 |
=1-(
3 |
5 |
2 |
5 |
=1-1,
=0;
(4)
9 |
7 |
5 |
8 |
11 |
8 |
5 |
7 |
=(
9 |
7 |
5 |
7 |
5 |
8 |
11 |
8 |
=2+2,
=4;
(5)(
3 |
5 |
1 |
12 |
2 |
5 |
5 |
12 |
=
3 |
5 |
1 |
12 |
2 |
5 |
5 |
12 |
=(
3 |
5 |
2 |
5 |
1 |
12 |
5 |
12 |
=1+
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