欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

3
7
÷
3
4
×
4
3
分析:此題應(yīng)先把除法改為乘法,然后約分計(jì)算.或按運(yùn)算順序,從左向右依次計(jì)算.
解答:解:
3
7
÷
3
4
×
4
3
,
=
3
7
×
4
3
×
4
3

=
16
21
點(diǎn)評:此題容易算成
3
7
÷1,因此應(yīng)注意運(yùn)算順序.
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:小學(xué)數(shù)學(xué) 來源: 題型:

直接寫出得數(shù)
2.4×5=
250×0.02= 1-0.57= 12.5×16=
0.24÷1.2=
1
4
-
1
5
=
5
6
÷
2
3
=
1
2
+
2
5
=
7
1
5
÷0.8=
25×
3
7
×
2
5
×
7
12
=
1
1
5
-1
1
5
÷2
=
3
4
×0.2
=
3
4
×
4
3
÷5
=
178.5-36.5-63.5=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:

直接寫出得數(shù).
1
3
÷
3
5
=
4
7
×
3
4
=
9
22
÷
3
11
=
1÷80%=
3
4
×
4
3
=
1
2
+
1
3
=
3.5×
3
7
=
2-
1
4
=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:

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:小學(xué)數(shù)學(xué) 來源: 題型:

用豎式計(jì)算.
73-25= 58-39= 54-36=
16+37= 23+38= 48+26=
40-13= 17+34= 43-29=

查看答案和解析>>

同步練習(xí)冊答案