问题 口算题 直接写得数。6×5=6×0.5=0.6×0.5=0.06×0.5=15×4=1.5×4=0.15×4=0.15×0.4=123×3=1.23×3=1.23×0.3=1.23×0.03= 答案 30；3；0.3；0.03；60；6；0.6；0.06；369；3.69；0.369；0.0369
