直接写出得数．4+4.73=______38÷9=______12×45÷12×45=______423-4512=______375÷138=______13×2÷13×2=______36+0.4=______5×32×2.5=______1÷0.9=______8×（12+0.5）=_____-数学
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![-=0.57[]-四年级数学](http://www.00-edu.com/d/file/ks/shuxue/1/xiaoshudejiafahejianfa/2019-03-13/c3302d733bef0baa93fa3cc5f7515338.gif)
