问题 解答题 直接写得数．15×45=23-12=38÷4=1-0.25=2.7+85%=9÷14=0.23×400=38+12=0.72÷0.6=1.25×2.4= 答案 15×45=1223-12=1638÷4=1921-0.25=0.752.7+85%=3.559÷14=360.23×400=9238+12=780.72÷0.6=1.21.25×2.4=3
