精英家教网 > 小学数学 > 题目详情
口算.
1
3
-
1
4
=
5-
5
7
=
4
27
×
9
16
=
2-
2
3
×2=
1
2
-
1
6
=
3
5
+
4
5
=
3
4
+
1
5
=
12-
3
8
=
4
5
×
3
2
=
1+
3
2
×
2
3
=
分析:根据分数四则运算的计算法则口算即可.
解答:解:
1
3
-
1
4
=
1
12
5-
5
7
=4
2
7
4
27
×
9
16
=
1
12
2-
2
3
×2=
2
3
1
2
-
1
6
=
1
3
3
5
+
4
5
=
7
5
3
4
+
1
5
=
19
20
12-
3
8
=11
5
8
4
5
×
3
2
=
6
5
1+
3
2
×
2
3
=2.
点评:此题考查了分数四则运算的计算法则及口算能力.
练习册系列答案
相关习题

科目:小学数学 来源: 题型:

口算.
1
3
-
1
4
=
42÷10%= 1-0.5= 48×12.5%=
1
9
÷9×
1
9
=
1
4
-
1
5
)×20=
7.2÷0.08=
5
7
-
5
7
÷5=

查看答案和解析>>

科目:小学数学 来源: 题型:

口算.
1
3
+
1
4
=
1
5
-
1
6
=
1-
5
8
=
1
4
+
1
5
=
2
7
+
1
3
=
1-
7
15
=
3
4
-
1
6
=
7
10
-
1
2
=
3
8
-
1
4
=
5
9
-
4
9
=
1
2
-
1
4
=
1-
13
13
=

查看答案和解析>>

科目:小学数学 来源: 题型:

口算.
1
3
-
1
4
=

1
5
-
1
10
=
7
9
×
6
7
=
6
7
÷6
=
12
13
×26
=
5
6
=
3
4
÷
1
8
=
28×
3
4
=
7
8
×
4
7
=
2
5
×99+
2
5
=
14÷
1
5
=
(
2
3
-
1
2
)×12
=
1
4
×4
=
15×
1
3
=
1
3
+
2
13
×
13
14
=

查看答案和解析>>

科目:小学数学 来源: 题型:

口算:
1
3
-
1
4
=
3
4
+
5
6
=
5
8
×
24
25
=
2
5
=
25×10%=
2
5
÷10=
25%:
1
8
=
2-
5
12
-
7
12
=
1
6
+
3
4
+
5
6
+
1
4
=
3
5
×
1
16
+
3
5
×
15
16
=

查看答案和解析>>

同步练习册答案