问题 解答题
3.21×23=3.21×2.3=321×2.3=
32.1×0.23=3.21×0.23=321×0.023=
答案

3.21×23=73.83

3.21×2.3=7.383

321×2.3=738.3

32.1×0.23=7.3833.21×0.23=0.7383321×0.023=7.383

单项选择题
单项选择题