56×21+36×78+36的简便运算
答案:4 悬赏:0 手机版
解决时间 2021-11-07 19:31
- 提问者网友:那叫心脏的地方装的都是你
- 2021-11-07 04:15
56×21+36×78+36的简便运算
最佳答案
- 五星知识达人网友:渊鱼
- 2021-11-07 04:35
56×21+36×78+36
=56×20+56+36×80-36
=1120+2880-36+56
=4000+20
=4200追答56×21+36×78+36
=56×20+56+36×80-36
=1120+2880-36+56
=4000+20
=4020
=56×20+56+36×80-36
=1120+2880-36+56
=4000+20
=4200追答56×21+36×78+36
=56×20+56+36×80-36
=1120+2880-36+56
=4000+20
=4020
全部回答
- 1楼网友:忘川信使
- 2021-11-07 06:31
见图
- 2楼网友:三千妖杀
- 2021-11-07 05:23
见图
- 3楼网友:第幾種人
- 2021-11-07 05:09
=56×21+36×(78+1)
=(36+20)×21+36×79
=36×21+20×21+36×79
=36×(21+79)+20×21
=36×100+420
=3600+420
=4020
=(36+20)×21+36×79
=36×21+20×21+36×79
=36×(21+79)+20×21
=36×100+420
=3600+420
=4020
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