题目内容
计算
(1)9-(+
)-6+(-
);
(2)(
-
+
)×(-36);
(3)-7×
+( -5 )×( -
)-
;
(4)( -3 )2÷
×( -
)-[ 1+( - 2 ) 3 ].
(1)9-(+
| 8 |
| 3 |
| 7 |
| 3 |
(2)(
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 6 |
(3)-7×
| 5 |
| 4 |
| 5 |
| 4 |
| 2 |
| 5 |
(4)( -3 )2÷
| 3 |
| 4 |
| 1 |
| 2 |
(1)9-(+
)-6+(-
)=9-6-
-
=9-6-5=-2;
(2)(
-
+
)×(-36)=-(
×36-
×36+
×36)=-(12-27+6)=9;
(3)-7×
+( -5 )×( -
)-
=-
+
-
=-
-
=-
;
(4)( -3 )2÷
×( -
)-[ 1+( - 2 ) 3 ]=-9×
×
-(1-8)=-6+7=1.
| 8 |
| 3 |
| 7 |
| 3 |
| 8 |
| 3 |
| 7 |
| 3 |
(2)(
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 6 |
(3)-7×
| 5 |
| 4 |
| 5 |
| 4 |
| 2 |
| 5 |
| 35 |
| 4 |
| 25 |
| 4 |
| 2 |
| 5 |
| 5 |
| 2 |
| 2 |
| 5 |
| 29 |
| 10 |
(4)( -3 )2÷
| 3 |
| 4 |
| 1 |
| 2 |
| 4 |
| 3 |
| 1 |
| 2 |
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