摘要:C.18=×14 D.18x=14(25 -)
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(1)(-100)+100
(2)(-35)+0
(3)(-0.5)+4.4
(4)(-16)+(-8)
(5)(-4.2)+4.25
(6)0-(+52)
(7)(-14)-(-15)
(8)(-1.24)-(+4.76)
(9)(-6)×0
(10)(-0.5)×(-8)
(11)(
-
+
)×12
(12)100×(-1)×(-0.1)
(13)(-
)-(-3
)+(+2
)-(+5
)
(14)|-2
|-(-
)+1-|1-
|
(15)1-(-1)(-1)-(-1)×0
(16)-4.2+5.7-7.6+10.1-5.5
(17)25×
-25×
-25×(-
)
(18)(-5)-(-25)×
×(-4)+(-6)×
.
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(2)(-35)+0
(3)(-0.5)+4.4
(4)(-16)+(-8)
(5)(-4.2)+4.25
(6)0-(+52)
(7)(-14)-(-15)
(8)(-1.24)-(+4.76)
(9)(-6)×0
(10)(-0.5)×(-8)
(11)(
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 6 |
(12)100×(-1)×(-0.1)
(13)(-
| 1 |
| 2 |
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 2 |
(14)|-2
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 2 |
(15)1-(-1)(-1)-(-1)×0
(16)-4.2+5.7-7.6+10.1-5.5
(17)25×
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
(18)(-5)-(-25)×
| 1 |
| 5 |
| 1 |
| 2 |
计算下列各题,并给出关键步骤.
(1)-
+(-
)-(-
)-
;
(2)0.125+3
-
+5
-0.25;
(3)(-
)×[(-
)÷(-1
)];
(4)-2-[-4+(1-
×0.6)÷(-3)].
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(1)-
| 2 |
| 3 |
| 1 |
| 6 |
| 1 |
| 4 |
| 1 |
| 2 |
(2)0.125+3
| 1 |
| 4 |
| 1 |
| 8 |
| 2 |
| 3 |
(3)(-
| 3 |
| 4 |
| 2 |
| 5 |
| 1 |
| 2 |
(4)-2-[-4+(1-
| 2 |
| 3 |