题目内容
计算
(1)22-(-4)+(-2)+4;
(2)1+(-2)+|-2-3|-5;
(3)(-5)×
×(-
)+
×0;
(4)(2
-4
-1
)×(-
).
(1)22-(-4)+(-2)+4;
(2)1+(-2)+|-2-3|-5;
(3)(-5)×
| 1 |
| 6 |
| 6 |
| 5 |
| 1 |
| 4 |
(4)(2
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 8 |
| 8 |
| 9 |
(1)原式=22+4+(-2)+4=30+(-2)=28;
(2)原式=1+(-2)+5+(-5)=-1;
(3)原式=1+0=1;
(4)原式=
×(-
)-
×(-
)-
×(-
)=-2-(-4)+1=-2+4+1=-2+5=3.
(2)原式=1+(-2)+5+(-5)=-1;
(3)原式=1+0=1;
(4)原式=
| 9 |
| 4 |
| 8 |
| 9 |
| 9 |
| 2 |
| 8 |
| 9 |
| 9 |
| 8 |
| 8 |
| 9 |
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