计算下面各题,能简算的要简算.45-310-15,23-(512-14)1112-310+112-71014-18+56,1916-(316+78)813+1517+1813+217.-数学
1 |
4 |
=
2 |
3 |
1 |
6 |
=
1 |
2 |
(3)
11 |
12 |
3 |
10 |
1 |
12 |
7 |
10 |
=(
11 |
12 |
1 |
12 |
3 |
10 |
7 |
10 |
=1-1,
=0;
(4)
1 |
4 |
1 |
8 |
5 |
6 |
=
1 |
8 |
5 |
6 |
=
23 |
24 |
(5)
19 |
16 |
3 |
16 |
7 |
8 |
=
19 |
16 |
3 |
16 |
7 |
8 |
=1-
7 |
8 |
=
1 |
8 |
(6)
8 |
13 |
15 |
17 |
18 |
13 |
2 |
17 |
=(