216+198简便计算
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216+198简便计算
216+198简便计算
216+198简便计算
216+198
=216+(200-2)
=216+200-2
=416-2
=414
216+198
=216+200-2
=416-2
=414
(200+16)+(200-2)
=200+16+200-2
=400+14
=414
216+200-2
=416-2=414
求采纳
216+198简便计算
216+198简便计算
216+198简便计算
216+198
=216+(200-2)
=216+200-2
=416-2
=414
216+198
=216+200-2
=416-2
=414
(200+16)+(200-2)
=200+16+200-2
=400+14
=414
216+200-2
=416-2=414
求采纳