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1、精选优质文档-倾情为你奉上 5- =+ = 2 + = = - = - + + = + = + = += -= 0.74+ = 0.375+ 1 + = 1= = + = = = + = 1 = + = - = = = + + 1= - = + = + = + = += = 1 5= 5=0.32= 12.58= 80.4 2.54= 7-6.38 360.9 = 50.001 = 1360 = 0.80.02 = 0.36+1.54 1355 0.62= 4.80.6= 1.7+3= 0.73.5= 1.2516= 9.632= 20.09= 26.2626= 4.576.43= 50.00
2、1= 2.54= 0.48120 1.0199 4.3-1.6= 0.97= 0.6+7= 0.220.5 1.258= 0.9100= 0.6416= 10-9.12= 0.8125= 3.21.78 四、计算下面各题,能简算的要简算。8.50.241.76 7.9117.9 3.1432 7.5(2.53.8) 51.4 - 0.45 0.8125-10 10-4.8-3.2 7.81.177.80.17 2.651.7+1.351.7 2.72-0.45 0.25101 3.2527+733.25 38.7-7.841.4 8.8-2.51.8 490.251.250.253.2 788
3、.5220.5 15-512- + - = - + =+ - + ) 0.25+ + + + 10 - () () () 6() - ( + ) + + - + 25 - - + - - ( - ) 5 + + +() () () 2 + 1 1= = + + += () 3 - - - 1 2 1557 131 1.8750.25= = = =1= 4() 2- - 0.8+0.2 ( ) () 2 3(- ) 6() 4.8+ +1.2 + + + + -(- ) + -(+ ) + - + + + + + () () 1 + + +- () () ()5 () 3(+ ) () 2= () () 10() + + = (+)() ()+()解方程 2x+4.625 + x = X= X + = x = x + = = X= + + x = x +( + )=2 x+0.75- 0.15 x16 = 35 0.5+4.5x=45.5 X4.5 = 20 5x3x= 3.2 5.5X-3X15 X= 2X=1- 3x29 =19 2.7X1.6 = 38.9 x = x - = = X 4x - =2- 89.122.9 3x142 11 8X0.755=0.25 3.8x-0.8x=27 -x x= x - x= X 326x = 4.2 专心-专注-专业