52乘以11.1减2.6乘以77.8简算_数学解答

52乘以11.1减2.6乘以77.8简算

人气：397 ℃　时间：2020-04-06 04:21:55

解答

52×11.1 - 2.6×77.8
=2.6×20×11.1 - 2.6×77.8
=2.6×(20×11.1 - 77.8)
=2.6×(222 - 77.8)
=2.6×144.2
=374.92