问题 解答题 直接写出得数.1-0.09=0.45×101=2÷0.02=0.25×0.7×0.4=23×12=5-35=415÷835=2.72+3-2.72+3= 答案 1-0.09=0.91,0.45×101=45.45,2÷0.02=100,0.25×0.7×0.4=0.07,23×12=13,5-35=425,415÷835=76,2.72+3-2.72+3=6.