77×9+99×3怎样用简便方法计算
答案:3 悬赏:70 手机版
解决时间 2021-02-06 22:23
- 提问者网友:沉默菋噵
- 2021-02-05 23:39
77×9+99×3怎样用简便方法计算
最佳答案
- 五星知识达人网友:醉吻情书
- 2021-02-06 00:15
77×9+99×3
=77×9+9×3 +90x3
=9x(77+3)+90x3
=9x80+90x3
=90x(8+3)
=90x11
=990
=77×9+9×3 +90x3
=9x(77+3)+90x3
=9x80+90x3
=90x(8+3)
=90x11
=990
全部回答
- 1楼网友:举杯邀酒敬孤独
- 2021-02-06 03:04
77×9+99×3
=77×9+9×33
=9*(77+33)
=9*110
=990
=77×9+9×33
=9*(77+33)
=9*110
=990
- 2楼网友:十鸦
- 2021-02-06 01:36
77X9+99X3
=11X(7X9+9X3)
=11X(63+27)
=11x100
=1100
=11X(7X9+9X3)
=11X(63+27)
=11x100
=1100
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