1.2×0.3= 0.24÷0.2= 0 .21×0.8=
1.8×0.5= 1.3+0.74= 1.25×8=
1-0.82= 0.25×0.4= 1÷0.05=
4.3+6.7= 2.5×7×0.4= 0.77×99+0.77=
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