9.8x7.7+2.3x7.7的简便方法
答案:3 悬赏:20 手机版
解决时间 2021-04-16 19:02
- 提问者网友:回忆在搜索
- 2021-04-16 09:28
9.8x7.7+2.3x7.7的简便方法
最佳答案
- 五星知识达人网友:毛毛
- 2021-04-16 09:48
7.7*(9.8+2.3)
=7.7*(9.8+0.2+2+0.1)
=7.7*(10+2+0.1)
=7.7*10+7.7*2+7.7*0.1
=77+15.4+0.77
=93.17
=7.7*(9.8+0.2+2+0.1)
=7.7*(10+2+0.1)
=7.7*10+7.7*2+7.7*0.1
=77+15.4+0.77
=93.17
全部回答
- 1楼网友:鸽屿
- 2021-04-16 12:30
=(9.8+2.3)X7.7
=12.1X7.7
=12.1X7.7
- 2楼网友:笑迎怀羞
- 2021-04-16 10:56
93.17
解析:
9.8×7.7+2.3×7.7
=7.7×(9.8+2.3)
=7.7×(10+2+0.1)
=7.7×10+7.7×2+7.7×0.1
=77+15.4+0.77
=92.4+0.77
=93.17
解析:
9.8×7.7+2.3×7.7
=7.7×(9.8+2.3)
=7.7×(10+2+0.1)
=7.7×10+7.7×2+7.7×0.1
=77+15.4+0.77
=92.4+0.77
=93.17
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