1.口算1.6÷0.4= 0.77×1= 7.5÷3= 1.5×6= 10÷0.1=0.125×8= 31.4÷3.14= 1.4×10= 0.1×6.4= 4.16÷1=2.用竖式计算 1.26÷1.8= 64×5.04= 43.5÷0.29= 3.选择合适的方法计算2.47×6.5+7.53×6.5 76.1×17-76.1×7...