计算下面各题,能简算的要简算.(89-13)÷(12×23)34÷[(23-16)÷5]310÷(45-12)-56(13-15-110)×3015-45×23-71567×111+17÷11.-数学
2 |
3 |
1 |
6 |
=
3 |
4 |
1 |
2 |
=
3 |
4 |
1 |
10 |
=
15 |
2 |
(3)
3 |
10 |
4 |
5 |
1 |
2 |
5 |
6 |
=
3 |
10 |
3 |
10 |
5 |
6 |
=1-
5 |
6 |
=
1 |
6 |
(4)(
1 |
3 |
1 |
5 |
1 |
10 |
=
1 |
3 |
1 |
5 |
1 |
10 |
=10-6-3,
=1;
(5)15-
4 |
5 |
2 |
3 |
7 |
15 |
=15-
8 |
15 |
7 |
15 |
=15-(
8 |
15 |
7 |
15 |
=15-1,
=14;
(6)
6 |
7 |