Question

32+63×31-123用简便计算怎么算？

Answer 1

32+63×31-123＝32+63×30+63-123＝32+1890+63-123＝1922+63-123＝1985-123＝1973

Answer 2

32+63×31－123
=32+63×(30+1)－123
=32+63×30+63－123
=32+1890－60
=32+1830
=1852

Answer 3

32+63×31-123
=63×(30+1)+9+23-123
=1890+63+9-100
=1900-100+62
=1862

Answer 4

32+63×31-123
=32+63×30+63-123
=32+1890+63-123
=32+1890-60
=32+1830
=1862

Answer 5

32+63x31-123＝32+63x31-63-60＝32+63x（31-1）-60＝32+63x30-60＝63x3-（60-32）＝1890-28＝1862