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口算我最棒.1.4+0.9=3.8+0.12=8-5.4=0.6-0.37=310-90=0.32×1000=12.6÷100=1.6×0.2=20×0.5=47+99=
题目详情
口算我最棒.
1.4+0.9= | 3.8+0.12= | 8-5.4= | 0.6-0.37= | 310-90= |
0.32×1000= | 12.6÷100= | 1.6×0.2= | 20×0.5= | 47+99= |
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答案和解析
1.4+0.9=2.3 | 3.8+0.12=3.92 | 8-5.4=2.6 | 0.6-0.37=0.23 | 310-90=220 |
0.32×1000=320 | 12.6÷100=0.126 | 1.6×0.2=0.32 | 20×0.5=10 | 47+99=146 |
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