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2.1÷28的竖式怎么算

2.1÷28=0.075

2.25 + 1.28 加法,小数点要对齐

2.1÷42 = 0.05能除尽,得到2位小数:

2.1÷0.2=10.5 仅供参考

1.21÷1.2=1余0.1 仅供参考

2.1除以0.28的竖式计算 2.1÷0.28=7.5 有用请采纳。

望采纳谢谢

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