把百分数化成分数
5％= (先填分子，后填分母)
160％=( ) (带分数先填整数，再填分子，最后填分母)
45％= (先填分子，后填分母)
30％= (先填分子，后填分母)
把分数化成百分数(除不尽的，百分号前的数保留一位小数)
把分数化成小数.(要记住这些数据)
(1)=________
(2)=________
(3)=________
(先填分子，后填分母)
(带分数先填整数，再填分子，最后填分母) 
(先填分子，后填分母)
(先填分子，后填分母)
=(
)％
≈(
)％
=________％
≈________％
=________％
≈________％
=________
=________
=________
=________
=________
=________
=________
=________
=________
=________
=________
=________