33x34+34x35+35x36+36x37+37x38= 怎么计算简便 得数是多少 谢谢
答案:2 悬赏:70 手机版
解决时间 2021-11-16 19:14
- 提问者网友：ミ烙印ゝ
- 2021-11-15 21:12
33x34+34x35+35x36+36x37+37x38= 怎么计算简便 得数是多少 谢谢
最佳答案
- 五星知识达人网友：痴妹与他
- 2021-11-15 22:45
33x34+34x35+35x36+36x37+37x38
=34x(33+35)+36x(35+37)+37x38
=34x68+36x72+37x38
=2312+2592+1406
=6310
=34x(33+35)+36x(35+37)+37x38
=34x68+36x72+37x38
=2312+2592+1406
=6310
全部回答
- 1楼网友：山河有幸埋战骨
- 2021-11-15 23:45
33x34+34x35+35x36+36x37+37x38
=34x(33+35)+36x(35+37)+37x38
=34x68+36x72+37x38
=34(70-2)+36(70+2)+37(40-2)
=2380+2520+1480-2*(34-36+37)
=6380-70
=6310
=34x(33+35)+36x(35+37)+37x38
=34x68+36x72+37x38
=34(70-2)+36(70+2)+37(40-2)
=2380+2520+1480-2*(34-36+37)
=6380-70
=6310
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