整式的乘法100题专项训练(精心整理).pdf
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整式的乘法 100 题专项训练 m n m+n 同底数幂的乘法:底数不变,指(次)数相加。公式:a ·a =a
1、填空: (1) 3 5 ; a a 2 a 3 ; n 2 ; x ⋅x ⋅ ⋅ x ⋅x (2) 2 3 2 3 2 6 ( a ) ( a) ; = ; − ⋅ − b ⋅b ⋅b x ⋅ x (3)(−x)2 ⋅x 3 ;104 ⋅10 ;3 ×32 ×33 ;
(4) 4 3 = ; ( )( )3 ( )5 = ; a ⋅a ⋅a −2 −2 −2 ( 2 5 3 2 3
(5) ) ( ) ( ) = ;(1) =___________ ; a a a − ⋅ − − − ⋅ a ⋅a
(6)( )2 6 ; 3 4 5 2 = ; a ( a) ( a) − ⋅ − ⋅ − • • • m m m m
(7) 3 4 ; n 2 ; − ⋅ − (b a) (b a) x ⋅x 6 1 1 2 6 4
(8)(− ) × − ;10 ×10 3 3
2、简单计算: (1)a4 ⋅a6 (2)b ⋅b5 2 3 3 5 9 (3) (4) ⋅ ⋅ ⋅ m ⋅m ⋅m c c c c
3.计算: 3 2 3 (1) ⋅ (2)( a) a −b b − ⋅ (3)( y )2 ( y )3 (4) 3 4 − ⋅− ( a) ( a) − ⋅− (5)−34 ⋅32 (6)(−5)7 ⋅(−5)6 (7) 2n 3 (8) m 4 m 2 (−q) ⋅(−q) (− ) ⋅(− ) (9)−23 (10)(−2)4 ⋅(−2)5
4.下面的计算对不对?如果不对,应怎样改正? (1)23 ×32 65 ; (2)a3 +a3 a6 ; (3)y n ×y n 2y 2n ; (4)m ⋅m2 m2 ; (5) 2 2 4 ; (