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(2014•孝感模拟)下面各题怎样简便就怎样算49+59-0.625-0.3752536×56+1136÷65(115+125)×1534×87+12×75%+0.75
题目详情
(2014•孝感模拟)
下面各题怎样简便就怎样算
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▼优质解答
答案和解析
=1-1
=0
(2)
×
+
÷
=
×
+
×
=(
+
)×
=1×
=
(3)(
+
)×15
=
×15+
×15
=1+
=1
(4)
×87+12×75%+0.75
=0.75×87+12×0.75+0.75
=(87+12+1)×0.75
=100×0.75
=75
(1)
| |||||
=1-(0.625+0.375) |
=0
(2)
25 |
36 |
5 |
6 |
11 |
36 |
6 |
5 |
=
25 |
36 |
5 |
6 |
11 |
36 |
5 |
6 |
=(
25 |
36 |
11 |
36 |
5 |
6 |
=1×
5 |
6 |
=
5 |
6 |
(3)(
1 |
15 |
1 |
25 |
=
1 |
15 |
1 |
25 |
=1+
3 |
5 |
=1
3 |
5 |
(4)
3 |
4 |
=0.75×87+12×0.75+0.75
=(87+12+1)×0.75
=100×0.75
=75
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