14:0.72 :1 3:2 查看更多

 

题目列表(包括答案和解析)

5:x=3:9
54
x
=
4
5
x:
1
4
=4:
2
3
36:18=x:5.4
6
1.5
=
x
10
1:
1
2
=x:
1
3
3
8
2
5
=x:
6
5
5
6
2
3
=
1
8
:x
5
12
=
7
x
7
2
:x=
3
5
1
7
1
10
1
8
=x:
1
4
x
0.8
=1.5:4
X:1.5=25%
x
13
=0.6
2.5
x
=
2
25
x:
3
4
=
8
9

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口算:
1.5+0.5=
2
2
2.1+0.6=
2.7
2.7
0.8-0.76=
0.04
0.04
2.38+0.7=
3.08
3.08
0.26-0.12=
0.14
0.14
9.6-2.8=
6.8
6.8

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求比值
1.5:2.5               
2.8:
7
4
                
4
5
1
4
           
9
5
27
10
7
2
7
4
                    
 0.65:1.8                   
3
8
:3.75.

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大小比较:
2.45×S○2
9
20
÷
1
S
(S≠0),
4
1
2
-
1
2
÷0.5○(4
1
2
-
1
2
)÷0.5,
4
7
8
×3.5+3
1
2
×5
1
8
7
2
×10.1,
1
2
+
1
4
+
1
8
+…+
1
128
○1.

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能减算的简算:
3.6×4.6-3.6+6.4×3.6;                     
8.4×0.26+0.74;
14.3÷(7.3×1.4-4.72)10.1×7.2.

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