题目内容

(2012?西城区)
37-21= 850÷100=
3
4
+
2
5
=
5
6
÷
5
4
=
4
9
-
5
18
=
4
9
×12
=
12×5= 4.4×1.1=
1
4
×
1
4
=
16
35
×
5
36
=
36÷3= 3-2.55=
7
15
÷
7
5
=
9
4
÷
3
8
=
210×10=
5
8
+
3
8
=
2
3
×
6
11
=
0.95=
95
95
%           
9.5-8.7=
6
7
-
1
7
=
19
22
=
1.12=
112
112
%          
0.6+0.13=
3
5
+
3
5
=
7
8
=
2
5
=
40
40
%        
0.4×0.9=
1
2
-
1
3
=
3
8
÷
1
3
=
11
50
=
22
22
%        
2.4÷0.3=
2
3
+
1
6
=
17
24
×24=
75%=
(     )
(     )
1.2-1.16=
7
4
-
1
2
=
9÷8= 15%=
(     )
(     )
分析:根据整数、分数、小数和百分数加减乘除的计算方法进行计算.
解答:解:
37-21=16, 850÷100=8.5,
3
4
+
2
5
=
23
20
5
6
÷
5
4
=
2
3
4
9
-
5
18
=
1
6
4
9
×12
=
16
3
12×5=60, 4.4×1.1=4.84,
1
4
×
1
4
=
1
16
16
35
×
5
36
=
4
63
36÷3=12, 3-2.55=0.45,
7
15
÷
7
5
=
1
3
9
4
÷
3
8
=6,
210×10=2100,
5
8
+
3
8
=1,
2
3
×
6
11
=
4
11
0.95=95%, 9.5-8.7=0.8,
6
7
-
1
7
=
5
7
19
22
=0,
1.12=112%, 0.6+0.13=0.73,
3
5
+
3
5
=
6
5
7
8
=
7
4
2
5
=40%,
0.4×0.9=0.36,
1
2
-
1
3
=
1
6
3
8
÷
1
3
=
9
8
11
50
=22%,
2.4÷0.3=8,
2
3
+
1
6
=
5
6
17
24
×24=17,
75%=
3
4
1.2-1.16=0.04,
7
4
-
1
2
=
5
4
9÷8=
9
8
15%=
3
20
点评:口算时,注意运算符号和数据,然后再进一步计算.
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