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14°28'+42°42' 90°-30°15'20'' 55°28'+42°32'-13°27' 15°51'×2
人气:176 ℃ 时间:2020-01-27 08:56:20
解答
14°28'+42°42' =56°60'=57°
90°-30°15'20'' =89°59'60''-30°15'20'' =59°44'40''
55°28'+42°32'-13°27' =97°60'-13°27' =84°33'
15°51'×2=30°102'=31°42
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90°-30°15′20〃= 15°51′×2= 55°28′+42°32′-13°27′= 176°52÷3=
【1】55°28′+42°32′-13°27′ 【2】15°51′×2除5
63/70= 11/55= 30/35= 15/20= 42/68= 27/135= 17/51= 3/81= 18/54= 13/39= 18/36= 24/72= 16/24= 49/28=
写出下列分子和分母的最大公因数:36/90 17/51 27/48 5/28 35/95 7/48 2/6 73/72 12/18 5/15 6/60 22/55
简便计算(交换律结合律):27+55+84+45+73 9+261+51+39+40 43+164+57-42 173+98+102-64托式
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