题目内容
计算:
(1)84-[
×(-3)-
+7]÷
;
(2)-32×(-
)2+(
-
+
)×(-24)?.
(1)84-[
| 1 |
| 4 |
| 5 |
| 6 |
| 1 |
| 12 |
(2)-32×(-
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 8 |
(1)原式=84-(-
-
+7)×12
=84+
×12+
×12-7×12
=84+9+10-84
=19;
(2)原式=-9×
+
×(-24)-
×(-24)+
×(-24)
=-1-18+4-9
=-28+4
=-24.
| 3 |
| 4 |
| 5 |
| 6 |
=84+
| 3 |
| 4 |
| 5 |
| 6 |
=84+9+10-84
=19;
(2)原式=-9×
| 1 |
| 9 |
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 8 |
=-1-18+4-9
=-28+4
=-24.
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