1、三、计算,要写出主要计算过程,能用简便方法的要用简便方法计算。(18分) 2 ()五年级计算题练习二一直接写出得数。 = = 1= = = = 1= 二解方程或比例。= = 2=三计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算。(1)() (2)2 (3)(4)68 7.5 322.5 (5)()五年级计算题练习三 = = = = = = = =7= = = 1= X= x = X()= 1() 五年级计算题练习四0.150.6= 740= 2= = 1.22.4= = 0.648=0.750.25= 100.06= = 12.580= 0.53= = 5=+ = - = -
2、=1 () () + + + 7- - + + 6- (-)五年级计算题练习五+ + 1+ + + + 1 + +6 5 0.1258 6.2513 2856 = 41.636 X=三、递等式计算,怎样简便就怎样算。7.88.752.21.25 7.81.177.80.17 7 () ()五年级计算题练习六 5- = 1-=50.001= 2.54= += -= + +=二. 解方程或比例。X= 2X=1- 5.5X-3X15三脱式计算,写出主要计算过程,能用简便算法的要用简便算法。() 五年级计算题练习七= = 1= = = = 2= = 2= (18分) 五年级计算题练习八2.40.03= 0.5 7.52.5 0.3913=x= x= x()=+ 60.62(9.212.62) 6.83.2 ()五年级计算题练习九= = = = = = = 1 = = = = = =二. 解方程。() () 6() 5 ()五年级计算题练习十+ = 6.80.08 1605 1.449 + 2.76100 8.71.93.1 + 1 - 0.146 480.6ww w.xkb 1. com= = = 2() ()