小小神算手. 1.25×8= |
2.3×2= | 25×0.4= |
3.6×0.25= | 4×0.25= | 0.73×100= |
2.4×0.25= | 1.6×0.125= |
1.25×8=10, | 2.3×2=4.6, | 25×0.4=10, |
3.6×0.25=0.9, | 4×0.25=1, | 0.73×100=73, |
2.4×0.25=0.6, | 1.6×0.125=0.2. |
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