两个数的差是6.12,如果被减数增加0.6,减数减少0.6,则差是 .
21÷ ==28: =( )%=0.875.
25%=3÷ = :16= :24.
:24== %= (小数)
1.25==15: = %.
3÷ =6: ==0.75= %