根据运算定律填空.0.4×8×2.5=口×口×口,这里运用了乘法的 .4.1×2.3+5.9×2.3=(口+口)×口,这里运用了乘法的 .
÷25== = (小数)= %= 成.
12: == :4=0.25= 折.
=2: =4÷ = %=0.2.
12÷ = :12=0.75= = %
0.75=6÷ = :12== %