"5.89×0.5×4×0.5"用简便方法计算_数学解答

"5.89×0.5×4×0.5"用简便方法计算

人气：222 ℃　时间：2020-04-28 00:30:29

解答

5.89×0.5×4×0.5
=5.89×(0.5×4×0.5)
=5.89x1
=5.890.99×470.99x47=(1-0.01)x47=1x47-0.01x47=47-0.47=46.53