题目内容
计算题:
(1)16+(﹣29)﹣(﹣7)﹣11
(2)﹣9+5×(﹣6)﹣12÷|﹣6|
(3)
(4)
(5)5xy2﹣2x2y+2xy2﹣3x2y﹣2
(6)(2x2y﹣4xy2)﹣(﹣3xy2+x2y)
(1)16+(﹣29)﹣(﹣7)﹣11
(2)﹣9+5×(﹣6)﹣12÷|﹣6|
(3)
(4)
(5)5xy2﹣2x2y+2xy2﹣3x2y﹣2
(6)(2x2y﹣4xy2)﹣(﹣3xy2+x2y)
解:(1)原式=16﹣29+7﹣11=﹣17;
(2)原式=﹣9﹣30﹣12÷6=﹣39﹣2=﹣41;
(3)原式=﹣36×(﹣
)﹣36×
﹣36×(﹣
)=45﹣48+3=0;
(4)原式=﹣1﹣
÷3×(﹣5)=﹣1﹣
×(﹣5)=﹣
;
(5)原式=(5xy2+2xy2)﹣(3x2y+2x2y)﹣2=7xy2﹣5x2y﹣2;
(6)原式=2x2y﹣4xy2+3xy2﹣x2y=x2y﹣xy2.
(2)原式=﹣9﹣30﹣12÷6=﹣39﹣2=﹣41;
(3)原式=﹣36×(﹣
(4)原式=﹣1﹣
(5)原式=(5xy2+2xy2)﹣(3x2y+2x2y)﹣2=7xy2﹣5x2y﹣2;
(6)原式=2x2y﹣4xy2+3xy2﹣x2y=x2y﹣xy2.
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