题目内容
计算:
(1)12-(-16)+(-4)-5
(2)(-
-
+
)÷(-
)
(3)-|-54|×2
÷(-4
)×|-
|
(4)-14-(1-0.5)×
×[2-(-3)2].
(1)12-(-16)+(-4)-5
(2)(-
2 |
9 |
1 |
4 |
1 |
18 |
1 |
36 |
(3)-|-54|×2
1 |
4 |
1 |
2 |
2 |
9 |
(4)-14-(1-0.5)×
1 |
3 |
(1)原式=12+16-4-5=28-9=19;
(2)原式=(-
-
+
)×(-36)=8+9-2=15;
(3)原式=-54×
×(-
)×
=6;
(4)原式=-1-
×
×(-7)=-1+
=
.
(2)原式=(-
2 |
9 |
1 |
4 |
1 |
18 |
(3)原式=-54×
9 |
4 |
2 |
9 |
2 |
9 |
(4)原式=-1-
1 |
2 |
1 |
3 |
7 |
6 |
1 |
6 |
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