摘要:计算:4100×99=
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计算:
(1)(-25)+34+156+(-65)
(2)23-17-(-7)+(-16)
(3)(-26.54)-(-6.4)+18.54-6.4
(4)(-0.5)-(-3
)+2.75-(+7
).
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(1)(-25)+34+156+(-65)
(2)23-17-(-7)+(-16)
(3)(-26.54)-(-6.4)+18.54-6.4
(4)(-0.5)-(-3
| 1 |
| 4 |
| 1 |
| 2 |
(1)计算(2
-3
)÷
(2)(
-
)-(
+
)
(3)解方程:4x2=9
(4)解方程:x2-6x+1=0.
(5)计算(
)-1-20100+|-2
|-
.
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| 48 |
| 27 |
| 3 |
(2)(
| 24 |
|
|
| 6 |
(3)解方程:4x2=9
(4)解方程:x2-6x+1=0.
(5)计算(
| 1 |
| 6 |
| 5 |
| 20 |