用简便计算一百五十六加七十八乘一千九百八十三加二十二乘一千九百八十五怎么算？
答案:2 悬赏:50 手机版
解决时间 2021-11-24 06:35
- 提问者网友：寂寞梧桐
- 2021-11-23 14:45
用简便计算一百五十六加七十八乘一千九百八十三加二十二乘一千九百八十五怎么算？
最佳答案
- 五星知识达人网友：怀裏藏嬌
- 2021-11-23 15:25
156+78x1983+22x1985
=156+78x1983+22x(1983+2)
=156+78x1983+22x1983+22x2
=156+(78+22)x1983+44
=156+44+100x1983
=200+198300
=198500
或者
=156+78x(1985-2)+22x1985
=156+78x1985-78x2+22x1985
=156-156+(78+22)x1985
=0+100x1985
=198500
=156+78x1983+22x(1983+2)
=156+78x1983+22x1983+22x2
=156+(78+22)x1983+44
=156+44+100x1983
=200+198300
=198500
或者
=156+78x(1985-2)+22x1985
=156+78x1985-78x2+22x1985
=156-156+(78+22)x1985
=0+100x1985
=198500
全部回答
- 1楼网友：洎扰庸人
- 2021-11-23 16:32
156+78×1983+22×1985
=156+78×(1985-2)+(100-78)×1985
=156+78×1985-78×2+100×1985-78×1985
=156-78×2+78×1985-78×1985+100×1985
=198500
=156+78×(1985-2)+(100-78)×1985
=156+78×1985-78×2+100×1985-78×1985
=156-78×2+78×1985-78×1985+100×1985
=198500
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