把棱长是1米的正方体放在地上,这个正方体的占地面积是1立方米. .
=15÷ =.
3÷ ==0.375= :24=24: .
=2.5:( )=125%=20÷( )=.
5: ==0.25= %
2.5÷ ==15: = %= (小数)