口算6×0.03= 1÷0.25= 8÷1.6= 1-0.3×0.6= 43÷0.01= 300×0.04= 14-1.4= 1.3×0.5= 0.42
口算6×0.03=1÷0.25=8÷1.6=1-0.3×0.6=43÷0.01=300×0.04=14-1.4=1.3×0.5=0.42÷0.6=7-1.4=12-1.2...
口算6×0.03= 1÷0.25= 8÷1.6= 1-0.3×0.6= 43÷0.01= 300×0.04= 14-1.4= 1.3×0.5= 0.42÷0.6= 7-1.4= 12-1.2= 2.5+2.5×3= 9÷0.01= 43÷0.1= 8.4÷4= 3.9-3.9÷3= 59+79= 2-16= 16-110= 57+17+97=
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| 6×0.03=0.18 | 1÷0.25=4 | 8÷1.6=5 |
| 1-0.3×0.6=0.82 | 43÷0.01=4300 | 300×0.04=12 |
| 14-1.4=12.6 | 1.3×0.5=0.65 | 0.42÷0.6=0.7 |
| 7-1.4=5.6 | 12-1.2=10.8 | 2.5+2.5×3=10 |
| 9÷0.01=900 | 43÷0.1=430 | 8.4÷4=2.1 |
| 3.9-3.9÷3=2.6 | +=1 | 2-=1 |
| -= | ++=2 |
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