填空。(1)4.3×0.31的积是( ),保 留一位小数约是( )。(2)两个因数的积是1.259,保留两 位小数约是( )。
× =× =+ =1.5× =× =1.
× =3600 × =3600 × =3600 × =3600 × =3600.
× = ÷=+ =1.
小刚在计算除法时,把除数42写成24,结果得360.正确的商应该是 .
把×=改写成两道除法算式: , .