96-69= 0.72+2.8= 0.125×0.8= 0.32÷0.1=
4× ÷4× = 7÷ = 1- =
403×19= -80%= ( - )×12=
25×24= 910﹣570= 6.3÷0.9=
+ = + = ÷0.1=
0.25 0.04
453+198=
10﹣0.03=
0.1÷0.01=
4×0.025=
4.5﹣0.75﹣0.25=
5×4÷5×4=
□.5×□.8的积是两位小数
□.9÷□.3的商是整数