摘要:()×12 29.x +
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计算题:
(1)|-
|÷|+
|= ;
(2)(+5)+(-7)= ;
(3)(
-
)×12= ;
(4)7a2b+2a2b= ;
(5)3xy2-7xy2= ;
(6)x-[3x-2(1+2x)]= ;
(7)-{-[-(2x-3y)]}= .
(8)(-2)÷[(-
)2×(
)3]×|-
|-(-5)
(9)-12008+(1-0.5)×
×[2-(-3)3]
(10)-13×
-0.34×
+
×(-13)-
×0.34
(11)0.29+[(2.5)2-(-2
)]÷(-6)-(-0.71)
(12)-32-(-3)2+(-3)2×(-
)-(0.3)2÷|-0.9|
(13)-32×(-
)2+(
-
+
)×(-24)
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(1)|-
| 2 |
| 3 |
| 3 |
| 2 |
(2)(+5)+(-7)=
(3)(
| 1 |
| 3 |
| 1 |
| 2 |
(4)7a2b+2a2b=
(5)3xy2-7xy2=
(6)x-[3x-2(1+2x)]=
(7)-{-[-(2x-3y)]}=
(8)(-2)÷[(-
| 1 |
| 2 |
| 1 |
| 2 |
| 25 |
| 4 |
(9)-12008+(1-0.5)×
| 1 |
| 3 |
(10)-13×
| 2 |
| 3 |
| 2 |
| 7 |
| 1 |
| 3 |
| 5 |
| 7 |
(11)0.29+[(2.5)2-(-2
| 3 |
| 4 |
(12)-32-(-3)2+(-3)2×(-
| 4 |
| 3 |
(13)-32×(-
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 8 |