
直接写得数.5.1-2= 7.2÷1.2= 3.86×10= 3.9×0.01= 9.1÷0.13= 9.73÷10 2.5×4= 0.5+0.43=
直接写得数.5.1-2=7.2÷1.2=3.86×10=3.9×0.01=9.1÷0.13=9.73÷102.5×4=0.5+0.43=1-0.55=0.4×0.3=98...
直接写得数.5.1-2= 7.2÷1.2= 3.86×10= 3.9×0.01= 9.1÷0.13= 9.73÷10 2.5×4= 0.5+0.43= 1-0.55= 0.4×0.3= 98.4÷100=
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解:5.1-2=3.1; | 7.2÷1.2=6; | 3.86×10=38.6; | 3.9×0.01=0.039; |
9.1÷0.13=70; | 9.73÷10=0.973; | 2.5×4=10; | 0.5+0.43=0.93; |
1-0.55=0.45; | 0.4×0.3=0.12; | 98.4÷100=0.984. |
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