24+11= 1.2+0.4= 1- =
× = 1.8÷0.3= 2- =
+ = 3.6÷0.4= ×16=
54÷18= 0.375+ = 0÷ =
8.1÷9= ×15= × =
1.25×8= 0.8×31= + =
13.8-7= ÷9= ÷4=
0.5×0.6= ×12= 10-0.5=
0.25×0.8×4= 1- - = 1-3÷8=