Question

48×63-63×65+83×37的简便运算是什么？

Answer 1

简便运算如下：48×63-63×65+83×37=（48-65）×63+83×37=-17×63+83×37=（20-37）×63+83×37=20×63-（20-83）×37=20×63+63×37=63×（20+37）=63×57=（60+3）×（60-3）=60×60-3×3=3591。

Answer 2

原式=48*63-63*65+（20+63）*37=（48-65+37）*63+20*37=20*63+20*37=20*（63+37）=20*100=2000

Answer 3

48×63-63×65+83×37
=(48-65)×63+83×37
=-17×63+83×37
=-17×63+(63+20)×37
=-17×63+37×63+20×37
=(-17+37)×63+20×37
=20×63+20×37
=20×(63+37)
=20×100
=2000

Answer 4

48×63-63×65+83×37＝63×(48-65)+83×37＝83×37-63×17＝
3071-1071＝2000

Answer 5

48×63-63×65+83×37
=63×(48-65)+83×37
=-63×17+83×37
=-1071+3071
=2000