48.39' 67.41'=___ 90.-78.19'40＂=___ 21.17'乘以5=___ 176.52'除以3=___（_数学解答

48.39' 67.41'=___ 90.-78.19'40＂=___ 21.17'乘以5=___ 176.52'除以3=___（精确到分）.
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人气：301 ℃　时间：2019-10-19 18:47:57

解答

48.39' +67.41'=__116º20′_
90.-78.19'40＂=_11·40′20″__
21.17'乘以5=__106°25′_
176.52'除以3=_58°57′_（精确到分）.