0.65乘以6.4减6.5乘以0.54加65乘以9％_数学解答

0.65乘以6.4减6.5乘以0.54加65乘以9％

人气：459 ℃　时间：2020-07-13 19:52:04

解答

0.65x6.4-6.5x0.54+65x0.09
=6.5x0.64-6.5x0.54+6.5x0.9
=6.5x(0.64-0.54+0.9)
=6.5x1
=6.5