早教吧作业答案频道 -->其他-->
(2014•临川区模拟)脱式计算(能简便要简便运算)(259+259+259+259)×0.25[3.6-(1.6+29)-79]×3789×[34-(716-0.25)]7.05×37+64×7.05-7.05.
题目详情
(2014•临川区模拟)脱式计算(能简便要简便运算)
(2
+2
+2
+2
)×0.25
[3.6-(1.6+
)-
]×
×[
-(
-0.25)]
7.05×37+64×7.05-7.05.
(2
5 |
9 |
5 |
9 |
5 |
9 |
5 |
9 |
[3.6-(1.6+
2 |
9 |
7 |
9 |
3 |
7 |
8 |
9 |
3 |
4 |
7 |
16 |
7.05×37+64×7.05-7.05.
▼优质解答
答案和解析
(1)(2
+2
+2
+2
)×0.25
=2
×4×0.25
=2
×(4×0.25)
=2
×1
═2
;
(2)[3.6-(1.6+
)-
]×
=[(3.6-1.6)-(
+
)]×
=[2-1]×
=1×
=
;
(3)
×[
-(
-0.25)]
=
×[
-
+0.25]
=
×[
+0.25-
]
=
×[1-
]
=
×
=
5 |
9 |
5 |
9 |
5 |
9 |
5 |
9 |
=2
5 |
9 |
=2
5 |
9 |
=2
5 |
9 |
═2
5 |
9 |
(2)[3.6-(1.6+
2 |
9 |
7 |
9 |
3 |
7 |
=[(3.6-1.6)-(
2 |
9 |
7 |
9 |
3 |
7 |
=[2-1]×
3 |
7 |
=1×
3 |
7 |
=
3 |
7 |
(3)
8 |
9 |
3 |
4 |
7 |
16 |
=
8 |
9 |
3 |
4 |
7 |
16 |
=
8 |
9 |
3 |
4 |
7 |
16 |
=
8 |
9 |
7 |
16 |
=
8 |
9 |
9 |
16 |
=
看了 (2014•临川区模拟)脱式...的网友还看了以下:
从0,2,3,7取三张,按要求组成3位数偶数奇数3的倍数5的倍数同时是2,3,5的倍数质 2020-03-30 …
直接写出得数:0.5+0.4=0.90.9;1.4+2.7=4.14.1;8.2+3.7=11.9 2020-04-07 …
口算.0.46-0.06=3.7+4.3=1+0.55=4.6-1.8=0.65+0.32=10- 2020-04-07 …
请帮我算下这个数独的答案,{4,2,0,0,9,0,0,0,0}{5,0,7,3,0,0,0,0, 2020-04-26 …
18是b的因数 b最小是() 用0 2 3 7 这四个数组成一个四位数 无论如何组合 这个四位数是 2020-05-16 …
α1=(6,4,1,-1,2)α2=(1,0,2,3,-4)α3=(1,4,-9,-16,22)α 2020-06-29 …
1.已知{1,2}含于A真包含于{1,2,3,4,5}的集合个数是A4B6C7D92已知A={1, 2020-07-09 …
18,-3,0,-2.3,7/22,0.202002002...,0.666...,3*3.14, 2020-07-18 …
用卡诺图法简化下面的逻辑函数F(A,B,C,D)=∑m(0,2,3,7,8,9,10,11,13,1 2020-11-20 …
我是口算小能手130×5=2+0.85=0.6×0.5=2.6×0.3=4×0.5=3.08×4=3 2020-12-08 …