题目列表(包括答案和解析)
7.填空:已知1米=109纳米,某种病毒直径为100纳米, 个这种病毒能排成1米长.
6.计算:
(1) (-2xy2)3÷4x2y5 (2) (3ab3c)2÷(-ab2)2
= =
= =
= =
5.计算:
(1) 10ab3÷(-5ab) (2) -8a2b3÷6ab2
= =
= =
(3) -21x2y4÷(-3x2y3) (4) (6×108)÷(3×105)
= =
= =
(5) 6x2y4÷3x2y3 (6) –a2bc÷ac
= =
= =
4.填空:
(1)2ab· =6a2b3;
(2) ·4x2y=-8x2y3z.
3.直接写出结果:
(1)(4×105)·(5×104)= (2)(-2a2b3)·(-3a)=
(3)(2xy2)·(xy)= (4)(x2y)·(-xyz)=
2.填空:单项式与单项式相乘,系数 ,相同字母 ,剩下的照抄.
1.直接写出结果:
(1)a5÷a2= (2)109÷103=
(3)x3÷x= (4)y3÷y2=
(5)m4÷m4= (6)(b4)2÷(b2)3=
(7)(-xy)3÷(-xy)= (8)(ab2)4÷(ab2)2=
15.3 整式的除法同步练习(第2课时)
6.判断正误:对的画“√”,错的画“×”.
(1)a4÷a3=a7; ( )
(2)x4·x2=x6; ( )
(3)x6÷x2=x3; ( )
(4)64÷64=6; ( )
(5)a3÷a=a3; ( )
(6)(-c)4÷(-c)2=-c2. ( )
5.计算:
(1)(-a)10÷(-a)7=
(2)(xy)5÷(xy)3=
(3)(-2y)3÷(-2y)=
(4)(x2)4÷(x3)2=
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