问题 解答题
计算题:
(1)-3-(-4)+7;
(2)8×(-
4
5
)÷|-16|

(3)(
3
8
-
1
6
-
3
4
)×(-24)

(4)(-2)2-|-6|+2-3×(-
1
3
)

(5)4
1
2
×[-32×(-
1
3
)2+0.8]÷(-
3
5
)
答案

(1)原式=-3+4+7

=-3+11

=8;

(2)原式=-8×

4
5
÷16

=-8×

4
5
×
1
16

=-

2
5

(3)原式=-

3
8
×24+
1
6
×24+
3
4
×24

=-9+4+18

=13

(4)原式=4-6+2+1

=7-6

=1

(5)原式=

9
2
×[-9×
1
9
+0.8]×(-
5
3

=

9
2
×[-1+0.8]×(-
5
3

=

9
2
×[-
1
5
]×(-
5
3

=

3
2

选择题
单项选择题