问题 填空题 12()=()20=0.75=______÷8=______%. 答案 0.75=34=3×44×4=12(16),0.75=34=(3×5)4×5=(15)20,0.75=3÷4=(3×2)÷(4×2)=(6)÷8,0.75=(75)%;故答案为:16,15,6,75.