问题 填空题 4角5分=______元6分=______元42厘米=______米8分米=______米. 答案 (1)4角5分=0.45元;(2)6分=0.06元;(3)42厘米=0.42米;(4)8分米=0.8米;故答案为:0.45,0.06,0.42,0.8.