390﹣190= 23+16= 25×4= 0.12×3= 0.4×0.2=
28÷28= 0.24÷2= 1÷5= 9÷100= 7÷6=
100﹣94= 1.7+2.3= +
= 
+
= 
﹣
=
4×
= 
×
= ÷
= 1﹣= 
÷3=
390﹣190= 23+16= 25×4= 0.12×3= 0.4×0.2=
28÷28= 0.24÷2= 1÷5= 9÷100= 7÷6=
100﹣94= 1.7+2.3= += += ﹣=
4×= ×= ÷= 1﹣= ÷3=
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