小学数学方程计算题和应用题(共5页).doc

精选优质文档-倾情为你奉上一、解方程(1) 4x+2.1=8.5 (2) 7.7-3.2x=4.5 (3) 0.8x+16=96 (4) 4x30=14 ( 5) 8.3x2x63 (6) 2x10 = 5.2(7)802x20 (8)1.2x0.8x28 (9) 2x0.1=3.7 (10) 163x28 (11)102.5x=7.5 (12)6x3=6二、提高练习：(1)3x+ 7x +10 = 90 (2) 3(x - 12）+ 23 = 35 (3) 7x82x27 (4)1.7x0.3x7.8(5)0.7x0.9x=6.4 (6) 1.3x2.43x=25.5(7)5x -18 = 32x (8)（7x - 4）+3（x - 2）= 2x +6