简算 12.75-17分之5+4分之1 1.3×4分之1-0.5×25%-0.2÷4 7分之6×15分之13×65分之7
答案:4 悬赏:20 手机版
解决时间 2021-03-20 06:13
- 提问者网友:孤凫
- 2021-03-19 13:37
简算 12.75-17分之5+4分之1 1.3×4分之1-0.5×25%-0.2÷4 7分之6×15分之13×65分之7
最佳答案
- 五星知识达人网友:想偏头吻你
- 2021-03-19 14:22
12.75-5/17+1/4
=12.75+0.25-5/17
=13-5/17
=12又12/17
,
1.3x1/4-0.5x25%-0.2÷4
=1.3x1/4-0.5x1/4-0.2x1/4
=(1.3-0.5-0.2)x1/4
=0.6x1/4
=0.15
,
7分之6×15分之13×65分之7
=6/7x(13/15x7/65)
=6/7x7/75
=2/25
,
86.48÷{(3.45+4.65)×0.8}
=86.48÷(8.1x0.8)
=86.48÷0.8÷8.1
=108.1÷8.1
≈13.35
,
1/2+(4/7x1/2)x7/25
=1/2+15/14x7/25
=1/2+3/10
=4/5
,
(38-1.8÷2)×0.3
=(38-3.6)x0.3
=34.4x0.3
=10.32
,
5分之3×6分之5+6分之1÷3分之5
=3/5x5/6+1/6x3/5
=3/5x(5/6+1/6)
=3/5x1
=3/5
,
12÷5分之4÷3分之5
=12÷(4/5x5/3)
=12÷4/3
=9
=12.75+0.25-5/17
=13-5/17
=12又12/17
,
1.3x1/4-0.5x25%-0.2÷4
=1.3x1/4-0.5x1/4-0.2x1/4
=(1.3-0.5-0.2)x1/4
=0.6x1/4
=0.15
,
7分之6×15分之13×65分之7
=6/7x(13/15x7/65)
=6/7x7/75
=2/25
,
86.48÷{(3.45+4.65)×0.8}
=86.48÷(8.1x0.8)
=86.48÷0.8÷8.1
=108.1÷8.1
≈13.35
,
1/2+(4/7x1/2)x7/25
=1/2+15/14x7/25
=1/2+3/10
=4/5
,
(38-1.8÷2)×0.3
=(38-3.6)x0.3
=34.4x0.3
=10.32
,
5分之3×6分之5+6分之1÷3分之5
=3/5x5/6+1/6x3/5
=3/5x(5/6+1/6)
=3/5x1
=3/5
,
12÷5分之4÷3分之5
=12÷(4/5x5/3)
=12÷4/3
=9
全部回答
- 1楼网友:拾荒鲤
- 2021-03-19 17:16
能把题拍下来么
- 2楼网友:洎扰庸人
- 2021-03-19 16:34
12.75-17分之5+4分之1
=12.75+0.25-5/17
=13-5/17
=12又12/17
1.3×4分之1-0.5×25%-0.2÷4
=1.3×0.25-0.5×0.25-0.2×0.25
=(1.3-0.5-0.2)×0.25
=0.6×0.25
=0.15
7分之6×15分之13×65分之78=156/175
6.48÷{(3.45+4.65)×0.8}
=6.48÷8.1÷0.8
=0.8÷0.8
=1
2分之1+(7分之4+2分之1)×25分之7
=1/2+4/7×7/25+1/2×7/25
=1/2+4/25+7/50
=25/50+8/50+7/50
=4/5
(38-1.8÷2)×0.3
=(38-0.9)×0.3
=37.1×0.3
=11.13
5分之3×6分之5+6分之1÷3分之5
=3/5×5/6+1/6×3/5
=3/5×(5/6+1/6)
=3/5
12÷5分之4÷3分之5
=12×5/4×3/5
=9
=12.75+0.25-5/17
=13-5/17
=12又12/17
1.3×4分之1-0.5×25%-0.2÷4
=1.3×0.25-0.5×0.25-0.2×0.25
=(1.3-0.5-0.2)×0.25
=0.6×0.25
=0.15
7分之6×15分之13×65分之78=156/175
6.48÷{(3.45+4.65)×0.8}
=6.48÷8.1÷0.8
=0.8÷0.8
=1
2分之1+(7分之4+2分之1)×25分之7
=1/2+4/7×7/25+1/2×7/25
=1/2+4/25+7/50
=25/50+8/50+7/50
=4/5
(38-1.8÷2)×0.3
=(38-0.9)×0.3
=37.1×0.3
=11.13
5分之3×6分之5+6分之1÷3分之5
=3/5×5/6+1/6×3/5
=3/5×(5/6+1/6)
=3/5
12÷5分之4÷3分之5
=12×5/4×3/5
=9
- 3楼网友:拜訪者
- 2021-03-19 15:18
12.75-17分之5+4分之1=12有17分之12,
1.3×4分之1-0.5×25%-0.2÷4=20分之3,
7分之6×15分之13×65分之7=25分之2,
6.48÷{(3.45+4.65)×0.8}=1,
2分之1+(7分之4+2分之1)×25分之7=5分之4,
(38-1.8÷2)×0.3=11.13
5分之3×6分之5+6分之1÷3分之5=5分之三
12÷5分之4÷3分之5=9
1.3×4分之1-0.5×25%-0.2÷4=20分之3,
7分之6×15分之13×65分之7=25分之2,
6.48÷{(3.45+4.65)×0.8}=1,
2分之1+(7分之4+2分之1)×25分之7=5分之4,
(38-1.8÷2)×0.3=11.13
5分之3×6分之5+6分之1÷3分之5=5分之三
12÷5分之4÷3分之5=9
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