618+23= 3.2+2= 2.4×5= 3.6÷1.2=
25×24= 910﹣570= 6.3÷0.9=
+ = + = ÷0.1=
13÷20= 7÷9= 3÷5=
6÷7= 11÷30= 4÷15=
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=