问题 解答题 直接写出得数 1.8×0.4=0.63÷0.7=4×0.25=0.46÷4.6=3÷0.3=5.43+1.47= 答案 1.8×0.4=0.72,0.63÷0.7=0.9,4×0.25=1,0.46÷4.6=0.13÷0.3=10,5.43+1.47=6.9.