把0.03扩大到它的 倍是3,把16缩小到它的是 .
填上适当的数. 7÷13== ÷ ÷7= 9cm=dm.
=12: =0.75= %
= : =27÷ =.
÷2== 折= %=0.75.
3:8= ÷ =.