题目内容
(1)-
×
×(-
)
(2)(
-
)÷1
÷
(3)(
-
-
)÷(-
)+(-
)
| 1 |
| 2 |
| 7 |
| 8 |
| 3 |
| 4 |
(2)(
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 10 |
(3)(
| 7 |
| 4 |
| 7 |
| 8 |
| 7 |
| 12 |
| 7 |
| 8 |
| 8 |
| 3 |
(1)-
×
×(-
)=
;
(2)(
-
)÷1
÷
=-
×
×10
=-
;
(3)(
-
-
)÷(-
)+(-
)
=-
×
+
×
+
×
+(-
)
=-2+1+
-
=-2+1-2
=-3.
| 1 |
| 2 |
| 7 |
| 8 |
| 3 |
| 4 |
| 21 |
| 64 |
(2)(
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 10 |
=-
| 1 |
| 6 |
| 4 |
| 5 |
=-
| 4 |
| 3 |
(3)(
| 7 |
| 4 |
| 7 |
| 8 |
| 7 |
| 12 |
| 7 |
| 8 |
| 8 |
| 3 |
=-
| 7 |
| 4 |
| 8 |
| 7 |
| 7 |
| 8 |
| 8 |
| 7 |
| 7 |
| 12 |
| 8 |
| 7 |
| 8 |
| 3 |
=-2+1+
| 2 |
| 3 |
| 8 |
| 3 |
=-2+1-2
=-3.
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