摘要:19.
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计算题(每小题3分,满分24分,要求写出计算过程.)
①(+8)-(-5)+(-9)-(+13);
②(-1
)+(-3.2)+|-1.8|;
③0-(-
)+(-
)-(-
)-(+
);
④(-
+
-
)×(-24);
⑤2
-[5
-(-7
)]-1
;
⑥
×(-9)+
×(-11)+
×(+10);
⑦-0.85×
+14×
-(14×
-0.85×
);
⑧|
-
|-|
-
|+|
-
|.
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①(+8)-(-5)+(-9)-(+13);
②(-1
| 3 |
| 5 |
③0-(-
| 1 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
| 5 |
| 6 |
④(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
⑤2
| 3 |
| 8 |
| 2 |
| 9 |
| 3 |
| 8 |
| 7 |
| 9 |
⑥
| 5 |
| 13 |
| 5 |
| 13 |
| 5 |
| 13 |
⑦-0.85×
| 8 |
| 17 |
| 2 |
| 7 |
| 3 |
| 7 |
| 8 |
| 17 |
⑧|
| 4 |
| 7 |
| 2 |
| 5 |
| 2 |
| 5 |
| 7 |
| 9 |
| 2 |
| 9 |
| 4 |
| 7 |