题目内容
计算:-7+(+2)=______,-5-5=______,-2001
×0=______,(-25)×(+1.2)=______,(-1
)×(-
)=______,(-2
)÷(-
)=______,(-1)÷(+
)=______,
÷(-2.5)=______.
| 10 |
| 17 |
| 2 |
| 5 |
| 5 |
| 49 |
| 1 |
| 7 |
| 5 |
| 14 |
| 3 |
| 5 |
| 1 |
| 6 |
-7+(+2)=-7+2=-5;
-5-5=-10;
-2001
×0=0;
(-25)×(+1.2)=25×1.2=-30;
(-1
)×(-
)=-
×(-
)=
;
(-2
)÷(-
)=-
×(-
)=6;
(-1)÷(+
)=-1×
=-
;
÷(-2.5)=-
×
=-
.
-5-5=-10;
-2001
| 10 |
| 17 |
(-25)×(+1.2)=25×1.2=-30;
(-1
| 2 |
| 5 |
| 5 |
| 49 |
| 7 |
| 5 |
| 5 |
| 49 |
| 1 |
| 7 |
(-2
| 1 |
| 7 |
| 5 |
| 14 |
| 15 |
| 7 |
| 14 |
| 5 |
(-1)÷(+
| 3 |
| 5 |
| 5 |
| 3 |
| 5 |
| 3 |
| 1 |
| 6 |
| 1 |
| 6 |
| 2 |
| 5 |
| 1 |
| 15 |
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