98+265+202用简便计算怎么算
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98+265+202用简便计算怎么算98+265+202用简便计算怎么算98+265+202用简便计算怎么算98+202+265=300+265=56598+2+200+265=565汗汗啊!!先用9
98+265+202用简便计算怎么算
98+265+202用简便计算怎么算
98+265+202用简便计算怎么算
98+202+265=300+265=565
98+2+200+265=565
汗汗啊!!先用98加202等于300啊!再加上265等于565 。。这样就简单些!
98+265+202
=(98+202)+265
=300+265
=565
98+265+202=(98+2)+265+200=100+265+200=300+265=565
98+265+202
=(98+202)+265
=300+265
=565
加法交换率
98+265+202
=265+(98+202)
=265+300
=565
98+265+202
=(98+202)+265
=300+265
=565
565....这还需要简便厚??..不用10秒吧..
98+265+202
=(98+202)+265
=300+265
=565