1、五)练习巩固,强化训练
练习一: 1、计算:(抢答)
(1) 105×106 (2) a7 ·a3 (3) x5 ·x5(4)b5 · b
2.计算:(1)x10 · x (2)10×102×104
(3) x5 ·x ·x3 (4)y4·y3·y2·y
练习二: 下面的计算对不对?如果不对,怎样改正?
(1)b5 · b5= 2b5 ( ) (2)b5 + b5 = b10 ( )
(3)x5 ·x5 = x25 ( ) (4)y5 · y5 = 2y10 (
2、 )
(5)c · c3 = c3 ( ) (6)m + m3 = m4 ( )
变式训练: 填空
(1)x5 ·( )= x 8 (2)a ·( )= a6
(3)x · x3( )= x7 (4)xm ·( )=x3m
(1) 思考题: 1、计算 (1) x n · xn+1 (2)(x+y)3 · (x+y)4
2、填空(1) 8 = 2x,则 x = ;
(2) 8× 4 = 2x,则 x = ;
(3) 3×27×9 = 3x,则 x = .