题目内容
计算:
(1)1-
+
-
+
(2)-5
-[-1.5-(4.5-4
)]
(3)-24×(-
+
-
)
(4)18×(-
)+13×
-4×
(5)-1
×(
-1)÷|-
|
(6)-14÷(-52)×(-
)+|0.8-1|.
(1)1-
| 4 |
| 7 |
| 1 |
| 5 |
| 3 |
| 7 |
| 9 |
| 5 |
(2)-5
| 3 |
| 4 |
| 3 |
| 4 |
(3)-24×(-
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 3 |
(4)18×(-
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
(5)-1
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 13 |
(6)-14÷(-52)×(-
| 5 |
| 3 |
(1)1-
+
-
+
=1-
-
+
+
=1-1+2
=2;
(2)-5
-[-1.5-(4.5-4
)]
=-5
-(-1.5-4.5+4
)
=-5
+1.5+4.5-4
=-10.5+6
=-4.5;
(3)-24×(-
+
-
)
=-
×(-24)+
×(-24)-
×(-24)
=12-18+8
=20-18
=2;
(4)18×(-
)+13×
-4×
=
×(-18+13-4)
=
×(-9)
=-6;
(5)-1
×(
-1)÷|-
|
=-
×(-
)×13
=13;
(6)-14÷(-52)×(-
)+|0.8-1|
=-1×(-
)×(-
)+0.2
=-
+
=
.
| 4 |
| 7 |
| 1 |
| 5 |
| 3 |
| 7 |
| 9 |
| 5 |
=1-
| 4 |
| 7 |
| 3 |
| 7 |
| 9 |
| 5 |
| 1 |
| 5 |
=1-1+2
=2;
(2)-5
| 3 |
| 4 |
| 3 |
| 4 |
=-5
| 3 |
| 4 |
| 3 |
| 4 |
=-5
| 3 |
| 4 |
| 3 |
| 4 |
=-10.5+6
=-4.5;
(3)-24×(-
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 3 |
=-
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 3 |
=12-18+8
=20-18
=2;
(4)18×(-
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
=
| 2 |
| 3 |
=
| 2 |
| 3 |
=-6;
(5)-1
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 13 |
=-
| 3 |
| 2 |
| 2 |
| 3 |
=13;
(6)-14÷(-52)×(-
| 5 |
| 3 |
=-1×(-
| 1 |
| 25 |
| 5 |
| 3 |
=-
| 1 |
| 15 |
| 1 |
| 5 |
=
| 2 |
| 15 |
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