12345×12346-12344×12343
=（12344+1）×12346-12344×12343
=12344×12346+12346-12344×12343
=12344×（12346-12343）+12346
=12344×3+12344+2
=12344×4+2
=49378
故答案为：49378．
计算 12345×12346-12344×12343=_．
计算 12345×12346-12344×12343=______．
数学人气：648 ℃时间：2020-04-03 01:13:07
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