问题 解答题 0.07×0.5=145÷454.8×56=0.4×(2.5×1.25)=2709÷9=67×213=78÷0.01=2110-110÷120= 答案 0.07×0.5=0.035,145÷45=94,4.8×56=4,0.4×(2.5×1.25)=1.25,2709÷9=301,67×213=2,78÷0.01=87.5,2110-110÷120=110.