(12,28)= [36,12]= (2,3,6)=
[4,5,6]= + = 9- =
- = + = × =
× = 52÷ = 1÷ =
16.1÷0.161= 2÷0.08= 2.4×0.5=
1.25×4×8= +1.05= ÷0.6=
( )3= -( )2=
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