一共250道口算题,一天5道口算题和5道竖式题三位数进位,退位,加减法...答:数学:计算题|数学:五年级|数学:研究生|数学:六年级【其他答案】4.6×68.9×70.43×0.286.45×0.730.396÷1.20.0.73×2.157.38÷1.6756÷0.3628.448÷14 2012-2-26.28×3.53.6×10217×40=680,100-63=37,3.2+1.68=4.88,2.8×0.4=1.1214-7.4=6.6,1.92÷0.04=48,0.32×500=160,0.65+4.35=510-5.4=4.6,4...