3.78+(6.22+4.72)
=3.78+6.22+4.72
=10+4.72
=14.72
18.73+3.85-2.73
=18.73-2.73+3.85
=16+3.85
=19.85
45.6-(83.7-78.8)
=45.6-4.9
=45.6-5+0.1
=40.6+0.1
=40.7
简算.3.78+(6.22+4.72) 18.73+3.85-2.73 45.6-(83.7-78.8)
简算.3.78+(6.22+4.72) 18.73+3.85-2.73 45.6-(83.7-78.8)
数学人气:280 ℃时间:2020-04-13 12:53:08
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