(1)295;(2)397;
分析
(1)197+98
方法一:197+98
=197+100-2
=297-2
=295
方法二:197+98
=200+98-3
=298-3
=295
(2) 98+299
方法一:98+299
=98+300-1
=398-1
=397
方法二:98+299
=100+299-2
=399-2
=397
197加98简便方法计算最多有几种
197+98=200-3+98=298-3=295
=197+100-2=297-2=295
=200-3+100-2=300-5=295