题目内容
计算-1+2=______,(+1)+(-2)=______,(-
)-(+2)=______,2-3=______,(-3)2=______,(-1)3=______,-12006=______;(-4)÷(-5)×(-
)=______.
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| 2 |
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| 5 |
-1+2=1;
(+1)+(-2)=1-2=-1;
(-
)-(+2)=-
-2=-
;
2-3=-1;
(-3)2=9;
(-1)3=-1;
-12006=-1;
(-4)÷(-5)×(-
)=-4×
×
=-
.
(+1)+(-2)=1-2=-1;
(-
| 1 |
| 2 |
| 1 |
| 2 |
| 5 |
| 2 |
2-3=-1;
(-3)2=9;
(-1)3=-1;
-12006=-1;
(-4)÷(-5)×(-
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 4 |
| 25 |
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