早教吧作业答案频道 -->其他-->
计算.(1)8.71-(115+3.71)+225(2)(-123)×79÷(−116)(3)37×635−37×513(4)(513−256)÷(−123)+13.
题目详情
计算.
(1)8.71-(1
+3.71)+2
(2)(-1
)×
÷(−1
)
(3)
×6
−
×5
(4)(5
−2
)÷(−1
)+
.
1
+3.71)+2
(2)(-1
)×
÷(−1
)
(3)
×6
−
×5
(4)(5
−2
)÷(−1
)+
.
1 1 5 5 2
(2)(-1
)×
÷(−1
)
(3)
×6
−
×5
(4)(5
−2
)÷(−1
)+
.
2 2 5 5
1
)×
÷(−1
)
(3)
×6
−
×5
(4)(5
−2
)÷(−1
)+
.
2 2 3 3
÷(−1
)
(3)
×6
−
×5
(4)(5
−2
)÷(−1
)+
.
7 7 9 9 −1
)
(3)
×6
−
×5
(4)(5
−2
)÷(−1
)+
.
1 1 6 6
×6
−
×5
(4)(5
−2
)÷(−1
)+
.
3 3 7 7
3 3 5 5
3 3 7 7
1 1 3 3
5
−2
)÷(−1
)+
.
1 1 3 3
5 5 6 6 −1
)+
.
2 2 3 3
.
1 1 3 3
(1)8.71-(1
1 |
5 |
2 |
5 |
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
1
1 |
5 |
2 |
5 |
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
1 |
5 |
2 |
5 |
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
2 |
5 |
1
2 |
3 |
7 |
9 |
1 |
6 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
2 |
3 |
7 |
9 |
1 |
6 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
7 |
9 |
1 |
6 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
1 |
6 |
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
2 |
3 |
1 |
3 |
1 |
3 |
▼优质解答
答案和解析
(1)8.71-(1
+3.71)+2
,
=8.71-3.71+2
-1
,
=5+1,
=6;
(2)(-1
)×
÷(−1
),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
1
1 1 15 5 5+3.71)+2
,
=8.71-3.71+2
-1
,
=5+1,
=6;
(2)(-1
)×
÷(−1
),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
2
2 2 25 5 5,
=8.71-3.71+2
-1
,
=5+1,
=6;
(2)(-1
)×
÷(−1
),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
2
2 2 25 5 5-1
,
=5+1,
=6;
(2)(-1
)×
÷(−1
),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
1 1 15 5 5,
=5+1,
=6;
(2)(-1
)×
÷(−1
),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
1
2 2 23 3 3)×
÷(−1
),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
7 7 79 9 9÷(−1
),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
−1
1 1 16 6 6),
=
×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
5 5 53 3 3×
×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
7 7 79 9 9×
,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
6 6 67 7 7,
=
;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
10 10 109 9 9;
(3)
×6
−
×5
,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
3 3 37 7 7×6
3 3 35 5 5−
3 3 37 7 7×5
1 1 13 3 3,
=
×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
3 3 37 7 7×(6
-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
3 3 35 5 5-5
),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
1 1 13 3 3),
=
×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
3 3 37 7 7×
,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
19 19 1915 15 15,
=
;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
19 19 1935 35 35;
(4)(5
−2
)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
5
1 1 13 3 3−2
5 5 56 6 6)÷(−1
)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
−1
2 2 23 3 3)+
,
=
÷(−1
)+
,
=-
×
+
,
=-
1 1 13 3 3,
=
÷(−1
)+
,
=-
×
+
,
=-
5 5 52 2 2÷(−1
)+
,
=-
×
+
,
=-
−1
2 2 23 3 3)+
,
=-
×
+
,
=-
1 1 13 3 3,
=-
×
+
,
=-
5 5 52 2 2×
+
,
=-
3 3 35 5 5+
,
=-
1 1 13 3 3,
=-
3 3 3
举报
问题解析 问题解析
(1)运用减法的性质(减去两个数的和,等于连续减去这两个数),以及加法交换律进行简算即可;
(2)首先判定运算结果的符号,同时把带分数化为假分数约分计算即可;
(3)利用乘法分配律简算;
(4)先算小括号里面的减法,再算除法,最后算加法即可. (1)运用减法的性质(减去两个数的和,等于连续减去这两个数),以及加法交换律进行简算即可;
(2)首先判定运算结果的符号,同时把带分数化为假分数约分计算即可;
(3)利用乘法分配律简算;
(4)先算小括号里面的减法,再算除法,最后算加法即可.名师点评 名师点评
本题考点: 本题考点:
分数的四则混合运算. 分数的四则混合运算.
考点点评: 考点点评:
注意运算顺序以及符号的判定是计算这类题目的关键. 注意运算顺序以及符号的判定是计算这类题目的关键.
扫描下载二维码
扫描下载二维码
©2019 作业帮 联系方式:service@zuoyebang.com
作业帮协议作业帮协议

var userCity = "\u4e50\u5c71",
userProvince = "\u56db\u5ddd",
zuowenSmall = "0";
1 |
5 |
2 |
5 |
=8.71-3.71+2
2 |
5 |
1 |
5 |
=5+1,
=6;
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
5 |
2 |
5 |
=8.71-3.71+2
2 |
5 |
1 |
5 |
=5+1,
=6;
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
2 |
5 |
=8.71-3.71+2
2 |
5 |
1 |
5 |
=5+1,
=6;
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
2 |
5 |
1 |
5 |
=5+1,
=6;
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
5 |
=5+1,
=6;
(2)(-1
2 |
3 |
7 |
9 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
2 |
3 |
7 |
9 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
7 |
9 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
6 |
=
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
5 |
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
7 |
9 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
6 |
7 |
=
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
10 |
9 |
(3)
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
3 |
7 |
3 |
5 |
3 |
7 |
1 |
3 |
=
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
3 |
7 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
3 |
5 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
3 |
=
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
3 |
7 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
19 |
15 |
=
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
19 |
35 |
(4)(5
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
3 |
5 |
6 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
2 |
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
3 |
=
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
5 |
2 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
2 |
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
3 |
=-
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
5 |
2 |
3 |
5 |
1 |
3 |
=-
3 |
3 |
5 |
1 |
3 |
=-
3 |
1 |
3 |
=-
3 |
3 |
作业帮用户
2017-09-27
举报
作业帮用户作业帮用户
2017-09-272017-09-27
举报



- 问题解析
- (1)运用减法的性质(减去两个数的和,等于连续减去这两个数),以及加法交换律进行简算即可;
(2)首先判定运算结果的符号,同时把带分数化为假分数约分计算即可;
(3)利用乘法分配律简算;
(4)先算小括号里面的减法,再算除法,最后算加法即可.
(2)首先判定运算结果的符号,同时把带分数化为假分数约分计算即可;
(3)利用乘法分配律简算;
(4)先算小括号里面的减法,再算除法,最后算加法即可.
(2)首先判定运算结果的符号,同时把带分数化为假分数约分计算即可;
(3)利用乘法分配律简算;
(4)先算小括号里面的减法,再算除法,最后算加法即可.
- 名师点评
-
- 本题考点:
- 分数的四则混合运算.
-
- 考点点评:
- 注意运算顺序以及符号的判定是计算这类题目的关键.
- 本题考点:
- 分数的四则混合运算.
- 本题考点:
- 分数的四则混合运算.
- 考点点评:
- 注意运算顺序以及符号的判定是计算这类题目的关键.
- 考点点评:
- 注意运算顺序以及符号的判定是计算这类题目的关键.






看了 计算.(1)8.71-(11...的网友还看了以下:
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 …
对角线数独1***4**3**2*3****1**3**8****6*4****52***5*6* 2020-04-27 …
用简便方法计算.①1.25×0.25×32②0.25×3.78×4③6.74×10.1④0.85× 2020-05-15 …
excel 区域内数字统计如何统计下面这组数据:A B C D E F G H I1 6 9 12 2020-05-16 …
四年级8个班级举行拔河比赛,每2个班级之间进行1场比赛,一共要进行几场比赛,以下那种算法是正确的( 2020-06-10 …
我用我喜欢的方法计算.15.73-(6.25+3.73)70.9-1.25-1.752.54+9. 2020-07-17 …
用递等式计算(能简算的要简便计算)0.175÷0.25×4.27.52-(7.7-2.48)+32 2020-07-18 …
照样子写算式,你会吗?并说说你的发现.45÷7=6…345-3=4242÷7=645+4=4949 2020-07-20 …
对角线数独游戏2*1*5*6*7*********6**7*1**3**6*4*3**7**2*9* 2020-11-18 …
直接写出得数.57÷1.9=2.5×0.4=6.3÷9=7.6+0.6=10.5-5=200×0.5 2020-11-19 …