题目内容
| 口算. 2.5×40= | 0.04×25= |
| 0.25×4= | 4×0.025= |
| 8×1.25= | 125×0.08= |
| 2.5×40=100, | 0.04×25=1, |
| 0.25×4=1, | 4×0.025=0.1, |
| 8×1.25=10, | 125×0.08=10. |
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题目内容
| 口算. 2.5×40= | 0.04×25= |
| 0.25×4= | 4×0.025= |
| 8×1.25= | 125×0.08= |
| 2.5×40=100, | 0.04×25=1, |
| 0.25×4=1, | 4×0.025=0.1, |
| 8×1.25=10, | 125×0.08=10. |