6÷6×
12×4÷3
1.5×1= 910÷70= 2.2﹣1.9= 6÷7= 435+199=
+= -= ÷= 20×= ×=
1÷0.25= += ×24= +=
﹣= 470×0.02= 10÷= 6×0=
1.5×80= ÷2= ×= ÷0.125=