水结成冰,体积会增加,冰化成水,体积会减少. .(判断对错)
= : =33÷ = %
÷4=25%= : =8÷ = 折.
0.75= : = :25= 折= %= (成数)
10: ==0.625=5÷ = %
12: = ÷25== (小数)= %