题目内容
判断题(对的打“∨”,错的打“×”)
(1)-4ab2÷2ab=2b;______
(2)12a2b3c÷6ab2=2ab;______
(3)4a5b4÷2a3b=2a2b3;______
(4)6a7b8÷2a3b4•3a4b4=4a7b8÷6a7b8=1.______.
(1)-4ab2÷2ab=2b;______
(2)12a2b3c÷6ab2=2ab;______
(3)4a5b4÷2a3b=2a2b3;______
(4)6a7b8÷2a3b4•3a4b4=4a7b8÷6a7b8=1.______.
(1)-4ab2÷2ab=-2b;错误;
(2)12a2b3c÷6ab2=2abc;错误;
(3)4a5b4÷2a3b=2a2b3;正确;
(4)6a7b8÷2a3b4•3a4b4=3a4b4•3a4b4=9a8b8,错误,
故答案为:(1)错误;(2)错误;(3)正确;(4)错误
(2)12a2b3c÷6ab2=2abc;错误;
(3)4a5b4÷2a3b=2a2b3;正确;
(4)6a7b8÷2a3b4•3a4b4=3a4b4•3a4b4=9a8b8,错误,
故答案为:(1)错误;(2)错误;(3)正确;(4)错误
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