题目内容
| 口算: 125×8= | 300÷12= | 450×20= | 300-82= |
| 299+63= | 13×4+17×4= | 12.6×1000= | 81.6÷1000= |
| 2.03×10= | 6.6÷100= | 63÷7÷9= | 101×25= |
| 125×8=1000, | 300÷12=25, | 450×20=9000, | 300-82=218, |
| 299+63=362, | 13×4+17×4=120, | 12.6×1000=12600, | 81.6÷1000=0.0816, |
| 2.03×10=20.3, | 6.6÷100=0.066, | 63÷7÷9=1, | 101×25=2525. |
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