题目内容
计算
(1)-2+(-4)-(-2);
(2)(-2
)×1
+(-2
)(-1
)+1;
(3)(-
)÷
×(-
);
(4)-32+(-2)+(-3)2.
(1)-2+(-4)-(-2);
(2)(-2
| 23 |
| 172 |
| 1 |
| 2 |
| 23 |
| 172 |
| 1 |
| 2 |
(3)(-
| 2 |
| 3 |
| 4 |
| 3 |
| 3 |
| 4 |
(4)-32+(-2)+(-3)2.
(1)原式=-2-4+2
=-6+2
=-4;
(2)原式=0+1
=1;
(3)原式=
×
×
=
;
(4)原式=-9-2+9
=-9+9-2
=-2.
=-6+2
=-4;
(2)原式=0+1
=1;
(3)原式=
| 2 |
| 3 |
| 3 |
| 4 |
| 3 |
| 4 |
=
| 3 |
| 8 |
(4)原式=-9-2+9
=-9+9-2
=-2.
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