化简:
(1)x-2y+(2x-y);
(2)(3a2-b2)-3(a2-2b2).
计算题
(1)-3+4+7-5
(2)(-2)×
(3)(
)×(-48)
(4)-32-8÷(-2)2+4×(-3)
计算下列各题:
(1)(-2)+(-8)
(2)1+(-2)+|-2-3|-5
(3)
(4)
(5)﹣3﹣[﹣5+(1﹣2×
)÷(﹣2)](6)25×(-18)+(-25)×12+25×(-10 )
计算:(每小题4分,共24分)
(1)-5-1+3-7
(2)(—3
)+(+8
)—(—5
)
(3)
(4)
(5)3×(-4)+28÷(-7)
(6)
计算:(每小题4分,共16分)
(1)15-(-8)-12;
(2)-22-|-2|+(-2)2 ;
(3)
;
(4)22+2×[(-3) 2-3÷
].
试题篮
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