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计算下面各题16+14=57-15=37+19=13-15=7-57=114+514+314=14+14+34=1-23-13=
题目详情
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▼优质解答
答案和解析
(1)
+
=
+
=
;
(2)
-
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
1 1 16 6 6+
=
+
=
;
(2)
-
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
1 1 14 4 4
=
+
=
;
(2)
-
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
2 2 212 12 12+
=
;
(2)
-
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
3 3 312 12 12
=
;
(2)
-
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
5 5 512 12 12;
(2)
-
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
5 5 57 7 7-
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
1 1 15 5 5
=
-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
25 25 2535 35 35-
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
7 7 735 35 35
=
;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
18 18 1835 35 35;
(3)
+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
3 3 37 7 7+
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
1 1 19 9 9
=
+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
27 27 2763 63 63+
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
7 7 763 63 63
=
;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
34 34 3463 63 63;
(4)
-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
1 1 13 3 3-
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
1 1 15 5 5
=
-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
5 5 515 15 15-
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
3 3 315 15 15
=
;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
2 2 215 15 15;
(5)7-
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
5 5 57 7 7
=6+
-
=6+
=6
;
(6)
+
+
=
=
;
(7)
7 7 77 7 7-
=6+
=6
;
(6)
+
+
=
=
;
(7)
5 5 57 7 7
=6+
=6
;
(6)
+
+
=
=
;
(7)
2 2 27 7 7
=6
;
(6)
+
+
=
=
;
(7)
2 2 27 7 7;
(6)
+
+
=
=
;
(7)
1 1 114 14 14+
+
=
=
;
(7)
5 5 514 14 14+
=
=
;
(7)
3 3 314 14 14
=
=
;
(7)
1+5+3 1+5+3 1+5+314 14 14
=
;
(7)
9 9 914 14 14;
(7)
问题解析 问题解析
(1)、(2)、(3)、(4)、(5)根据异分母分数加减法的计算方法进行计算;
(6)、(7)根据同分母分数加法的计算方法进行计算;
(8)根据减法的性质进行简算. (1)、(2)、(3)、(4)、(5)根据异分母分数加减法的计算方法进行计算;
(6)、(7)根据同分母分数加法的计算方法进行计算;
(8)根据减法的性质进行简算.名师点评 名师点评
本题考点: 本题考点:
分数的加法和减法. 分数的加法和减法.
考点点评: 考点点评:
考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算定律简便计算. 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
var userCity = "\u4e50\u5c71",
userProvince = "\u56db\u5ddd",
zuowenSmall = "0";
1 |
6 |
1 |
4 |
=
2 |
12 |
3 |
12 |
=
5 |
12 |
(2)
5 |
7 |
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1 |
6 |
1 |
4 |
=
2 |
12 |
3 |
12 |
=
5 |
12 |
(2)
5 |
7 |
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1 |
4 |
=
2 |
12 |
3 |
12 |
=
5 |
12 |
(2)
5 |
7 |
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
2 |
12 |
3 |
12 |
=
5 |
12 |
(2)
5 |
7 |
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
3 |
12 |
=
5 |
12 |
(2)
5 |
7 |
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
5 |
12 |
(2)
5 |
7 |
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
5 |
7 |
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1 |
5 |
=
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
25 |
35 |
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
7 |
35 |
=
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
18 |
35 |
(3)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
3 |
7 |
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1 |
9 |
=
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
27 |
63 |
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
7 |
63 |
=
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
34 |
63 |
(4)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1 |
3 |
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1 |
5 |
=
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
5 |
15 |
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
3 |
15 |
=
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
2 |
15 |
(5)7-
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
5 |
7 |
=6+
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
7 |
7 |
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
5 |
7 |
=6+
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
2 |
7 |
=6
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
2 |
7 |
(6)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1 |
14 |
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
5 |
14 |
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
3 |
14 |
=
1+5+3 |
14 |
=
9 |
14 |
(7)
1+5+3 |
14 |
=
9 |
14 |
(7)
9 |
14 |
(7)
作业帮用户
2017-10-14
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作业帮用户作业帮用户
2017-10-142017-10-14
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- 问题解析
- (1)、(2)、(3)、(4)、(5)根据异分母分数加减法的计算方法进行计算;
(6)、(7)根据同分母分数加法的计算方法进行计算;
(8)根据减法的性质进行简算.
(6)、(7)根据同分母分数加法的计算方法进行计算;
(8)根据减法的性质进行简算.
(6)、(7)根据同分母分数加法的计算方法进行计算;
(8)根据减法的性质进行简算.
- 名师点评
-
- 本题考点:
- 分数的加法和减法.
-
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
- 本题考点:
- 分数的加法和减法.
- 本题考点:
- 分数的加法和减法.
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
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