首页5年级下册同分母分数加减法

5年级 下册 - 同分母分数加减法

练习题数量: 100

显示答案:
难度:
运算类型:
最大分母:
50
算巧巧-口算天天练
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20
21
-
15
21
=
45
49
+
1
49
=
4
19
+
5
19
=
5
9
+
3
9
=
4
6
-
3
6
=
37
47
+
4
47
=
16
20
-
10
20
=
27
29
+
1
29
=
2
2
-
1
2
=
1
2
+
1
2
=
10
46
+
20
46
=
43
49
-
1
49
=
17
19
+
1
19
=
45
49
-
21
49
=
7
7
-
5
7
=
8
39
+
23
39
=
25
32
+
6
32
=
12
29
-
10
29
=
10
39
-
7
39
=
1
14
+
10
14
=
9
11
-
5
11
=
1
5
+
1
5
=
22
25
+
1
25
=
3
32
-
1
32
=
27
38
+
7
38
=
21
32
-
15
32
=
21
44
+
6
44
=
9
21
+
3
21
=
31
36
-
15
36
=
27
28
-
23
28
=
8
22
+
7
22
=
6
37
+
16
37
=
9
17
-
1
17
=
42
48
-
13
48
=
30
35
-
12
35
=
5
27
+
19
27
=
13
21
+
5
21
=
7
36
+
1
36
=
2
12
+
1
12
=
5
16
+
1
16
=
19
31
-
9
31
=
18
30
-
13
30
=
10
18
-
7
18
=
2
7
+
4
7
=
2
11
+
8
11
=
38
42
+
2
42
=
21
38
-
10
38
=
6
9
-
3
9
=
11
14
+
1
14
=
2
4
+
1
4
=
7
32
+
2
32
=
21
23
+
1
23
=
44
45
-
28
45
=
29
35
+
3
35
=
38
46
+
5
46
=
6
37
+
20
37
=
3
6
+
2
6
=
13
14
-
7
14
=
19
25
+
1
25
=
13
16
-
8
16
=
8
12
-
6
12
=
5
14
+
1
14
=
34
46
+
4
46
=
22
29
-
14
29
=
13
16
-
6
16
=
4
4
-
1
4
=
9
28
+
7
28
=
4
23
-
2
23
=
4
26
+
1
26
=
45
49
-
27
49
=
10
15
+
3
15
=
13
18
-
5
18
=
22
44
+
1
44
=
16
20
+
2
20
=
15
30
-
5
30
=
11
13
+
1
13
=
3
12
+
8
12
=
40
41
-
38
41
=
34
38
+
3
38
=
19
31
+
11
31
=
26
30
-
4
30
=
2
10
+
5
10
=
13
38
+
10
38
=
14
15
-
13
15
=
38
41
-
20
41
=
31
41
-
26
41
=
36
45
+
7
45
=
2
5
+
2
5
=
24
35
-
2
35
=
10
13
+
1
13
=
21
25
+
2
25
=
31
40
+
1
40
=
8
8
-
6
8
=
11
43
+
12
43
=
6
28
+
1
28
=
21
21
-
14
21
=
10
26
-
1
26
=
18
25
+
4
25
=
20
36
-
11
36
=
33
43
-
32
43
=