(13×0.58-4.87+0.42×13- 5.13) ×4.25
直接写出下面各题的得数. 1.3+0.4= 5.6+2.1= 3.2+4.5= 5.6﹣2.2= 7.8﹣0.8= 9.2﹣6.1= 6.3+3.4= 4.6+2.3= 5+3.7= 8.7﹣2.5= 7.2﹣6.2= 8.7﹣6=
竖式计算 12.42+0.48= 0.56+11.534= 44﹣22.13= 91﹣22.035= 52.6+21.237= 9.15﹣2.18=
用竖式计算. 9.5+7.47= 60﹣53.21= 8.36+24= 21.04﹣7.58=
口算. 3.1+0.8= 1﹣0.5= 4.2+0.7= 4.6+2.3= 9.6﹣2.4= 5.5+0.4= 1.9﹣0.9= 7.3+0.6= 9.9﹣9=