精英家教网 > 小学数学 > 题目详情
1
8
÷4+
1
8
÷
4
3
              
5
6
-
1
4
+
1
3
)÷
1
12
             
3
5
÷
9
40
+
1
2
4
11
÷
1
22
×
7
8
              
4
9
×27÷
3
4
                  
2000÷
1999
2000
分析:(1)把除法化成乘法,再运用乘法的分配律进行解答,
(2)运用乘法的分配律进行解答,
(3)先算除法,再加法,
(4)从左向右进行计算即可,
(5)从左向右进行计算即可,
(6)把2000化成1999+1,再运用乘法的分配律进行解答.
解答:解:(1)
1
8
÷4+
1
8
÷
4
3

=
1
8
×
1
4
+
1
8
×
3
4

=
1
8
×(
1
4
+
3
4
),
=
1
8
×1,
=
1
8


(2)(
5
6
-
1
4
+
1
3
)÷
1
12

=
5
6
×12-
1
4
×12+
1
3
×12,
=10-3+4,
=11;

(3)
3
5
÷
9
40
+
1
2

=
3
5
×
40
9
+
1
2

=
8
3
+
1
2

=
19
6


(4)
4
11
÷
1
22
×
7
8

=
4
11
×22×
7
8

=7;

(5)
4
9
×27÷
3
4

=
4
9
×27×
4
3

=16;

(6)2000÷
1999
2000

=(1999+1)×
2000
1999

=1999×
2000
1999
+1×
2000
1999

=2000+
2000
1999

=2001
1
1999
点评:此题考查了分数四则混合运算的顺序,注意能运用运算定律简算的要简算.
练习册系列答案
相关习题

科目:小学数学 来源: 题型:

3+49= 5+49= 49+4= 7+48=
63+8= 13×7= 15×6= 25×4=
24×5= 15×3= 71-60= 33-5=
53-40= 51-1= 54-4= 18+2=
27+3= 7+27= 54+6= 9+8=
360÷9= 720÷8= 3600÷9= 2100÷3=
5400÷6= 65-56= 41-32= 90-81=
43-36= 53-48= 7+8×8= 6×6+5=
6+7×7= 1+3×6= 5+3×8= 5+27=
45+7= 18+8= 9+9= 6+49=
6+3×9= 1+2×9= 5×9+5= 7×8+6=
7×9+1= 6×8+5= 8+9×6= 6+5×7=
5+2×9= 9×4+6=

查看答案和解析>>

科目:小学数学 来源: 题型:

直接写出得数.
2
3
×
5
8
35÷
5
8
7
4
÷
14
15
5
6
+
7
18
3
8
+
4
3
)×4
1
8
÷9×
1
8
5-4÷
4
5
1
2
+
1
2
÷
1
2
+
1
2

查看答案和解析>>

科目:小学数学 来源: 题型:

3
4
×2
=
1
6
+
1
2
=
5
9
÷5
=
1
12
×
6
7
=
3
4
÷3
=
5
4
×
5
4
=
5
8
÷1
=
5-
2
3
=
3
9
×12
=
3
5
×
5
12
=
4-
2
3
=
7
12
×3
=
2
7
÷14
=
8+
3
5
=
13
30
=
39×
3
13
=
1
2
=
5
6
÷
3
4
=
12
7
=
20÷
4
5
=
1-
9
10
=
2.5×16=
5
12
÷
1
6
=
3
2
×
4
5
=
8
15
÷24
=
11÷
22
8
=
1
2
÷
3
8
=
4
7
÷
2
3
=
3
4
+
1
7
=
1.5÷0.05=
1
9
×9
=
1.5÷0.05=
5
8
÷
7
12
=
4
5
×
2
3
×
5
6
=
5
9
×
2
5
=
2.5×0.4=
14×
5
16
=
(
1
2
+
1
3
)×12
=
14
33
×
3
7
=
7
9
=
5
8
×
5
8
=
5
21
+
4
7
=
7
9
÷7
=
2-
1
4
=
3
5
-
1
8
=
4
21
÷
8
7
=
2
3
-
1
4
=
6.25+1.75=
1
2
÷
7
18
=
9
10
×6
=
1
8
+
1
9
=
3
4
÷
4
3
=
1
2
×
2
3
=
12-
5
7
=
2
5
=
2
9
÷18
=
7
28
÷
2
9
=
10×1×
2
5
=
20÷
4
5
=
1
3
×9+9×
2
3
=
42÷
21
23
=
3
8
÷12
=

查看答案和解析>>

科目:小学数学 来源: 题型:

直接写出得数.
16-9=
12-4= 18-4= 36+20=
5+43= 5+70= 25+44= 8+3=
35+20= 85-37= 62+30= 99-46=

查看答案和解析>>

同步练习册答案