问题
解答题
计算: (1)4-(-4)+(-3); (2)-7
(3)-14-[3-(-2)3]; (4)(-
(5)-2×(-2
(6)4
|
答案
(1)4-(-4)+(-3)
=4+4-3
=5;
(2)-7
1 |
3 |
1 |
3 |
=-7
1 |
3 |
1 |
3 |
=-5+5
=0;
(3)-14-[3-(-2)3]
=-1-[3+8]
=-1-11
=-12;
(4)(-
1 |
3 |
1 |
3 |
=-(
1 |
3 |
1 |
3 |
=-
1 |
9 |
=-
1 |
9 |
(5)-2×(-2
1 |
6 |
1 |
6 |
13 |
6 |
=(2-7+5)×2
1 |
6 |
=0×2
1 |
6 |
=0;
(6)4
1 |
2 |
1 |
3 |
1 |
4 |
=4
1 |
2 |
1 |
9 |
4 |
9 |
=4
1 |
2 |
4 |
9 |
=
9 |
2 |
9 |
5 |
4 |
9 |
=
18 |
5 |