怎样简便就怎样计算 11/10-1/4-1/3 1/8×58+1/8×42+1/8 2/
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解决时间 2021-02-12 09:55
- 提问者网友：半生酒醒
- 2021-02-12 01:47
怎样简便就怎样计算 11/10-1/4-1/3 1/8×58+1/8×42+1/8 2/
最佳答案
- 五星知识达人网友：一把行者刀
- 2021-02-12 01:57
11/10-1/4-1/3
=66/60-15/60-20/60
=51/60-20/60
=31/60
1/8×58+1/8×42+1/8
=1/8×(58+42+1)
=1/8×(96+5)
=1/8×96+1/8×5
=12+5/8
=12又5/8
2/5×1/5+40/100×4/5
=2/5×1/5+2/5×4/5
=2/5×(1/5+4/5)
=2/5×1
=2/5
5/9÷5+5÷5/9
=5/9×1/5+5×9/5
=1/9+9
=9又1/9
=66/60-15/60-20/60
=51/60-20/60
=31/60
1/8×58+1/8×42+1/8
=1/8×(58+42+1)
=1/8×(96+5)
=1/8×96+1/8×5
=12+5/8
=12又5/8
2/5×1/5+40/100×4/5
=2/5×1/5+2/5×4/5
=2/5×(1/5+4/5)
=2/5×1
=2/5
5/9÷5+5÷5/9
=5/9×1/5+5×9/5
=1/9+9
=9又1/9
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