4.9×0.36+0.49×4.2+0.049×22这题这么算?_数学解答

4.9×0.36+0.49×4.2+0.049×22这题这么算?

人气：259 ℃　时间：2020-01-29 12:29:06

解答

4.9×0.36+0.49×4.2+0.049×22
=4.9x0.36+4.9x0.42+4.9x0.22
=4.9x(0.36+0.42+0.22)
=4.9x1
=4.9