(完整)五年级小数加减乘除混合运算计算题练习题
-
.
小数混合运算专项训练
1
、解方程。
(
1
)
5x
=
450
p>
(
2
)
12
(
6
-
x
)=
42
(
3
p>
)
1.2
×
6+4
x
=
12
(
4
p>
)
8.5x
-
x<
/p>
=
22.5
2
、用简便方法计算。
(
1
)
0.25
×
3.2
×
12.5
(
3
p>
)
0.25
×
44
3
、用脱式计算。
< br>(
1
)
2.6+1.4
×
1.5
-
1.5
(
3
)
p>
2.6+2.4
×
(
1.4
-
1.05
)
30.8
÷
[14-(9.85+1.07)]
p>
2.881
÷
0.43-0.24
×
3.5
.
(
2
)
p>
36
×
10.1
(
4
)
p>
22.2
×
4+17.8
< br>×
4
p>
(
2
)
(
37
-
3.6
÷
4.8
)
÷
12.5
(
4
)
p>
15.6
÷
16
×
(
0.25+1.25
)
[60-(9.5+28.9)]
÷
0.18
20
×
[(2.44-1.8)
÷
0.4+0.15]
.
28-(3.4+1.25
×
2.4)
2.55
×
7.1+2.45
×
7.1
777
×
9+1111
×
3
p>
0.8
×
[15.5-(3.21+5.7
9)]
(31.8+3.2
×
4)
÷
5
p>
0.64
×
25
×
7.8+2.2
p>
36.25
÷
4.25
×
9.9
24
÷<
/p>
2.4
-
2.5
×
0.8
671
×
15-974
19.
4
×
6.1
×
2.3
18.1
×
0.92+3.93
.
31.5
×
4
÷
(6+3)
2
÷
2.5
+2.5
÷
2
5180
-
705
×
6
(4121+2389)
÷
7
469
×
12+1492
5.67
×
0.2-0.62
0.4
×
0
.7
×
0.25
.
0.78+5.436+1
4. 8
×
5
÷
4+1
÷
4
9. 9x5
÷
6+5
÷
6
10. 3
÷
4x8
÷
9-1
÷
< br>3
14. 31x5
÷
6-5
÷
6
20.
3x2
÷
9+1
÷
3
36. 178-145
÷
5
×
6+42
6.5
×
(
4.8-1.2
×
4
< br>)
2.55
×
7.1+2.45
×
7.1
(
p>
31.8+3.2
×
4
)
÷
5
0.64
×
25
×
7.8+2.2
194
-
64.8
÷
1.8
×
0.9
.
16. 5
÷
9x18-14x2
÷
7
35. 95
÷
(
64-45
)
7.2
÷
0.8-1.2
×
5
28-(3.4+1.25
×
2.4)
777
×
9
+1111
×
3
p>
31.5
×
4
÷<
/p>
(6+3)
2
p>
÷
2.5+2.5
÷
2
36.72
÷
4.25
×
9.9
.
51
80
-
705
×
6
24
÷<
/p>
2.4
-
2.5
×
0.8
(4121+2389)
÷
7
671
×
15-974
469
×
12+1492
405
×
(3213-3189)
p>
19.4
×
6.1
×
2.3
18.1
×
0.92+3.93
p>
0.4
×
0.7
×
0.25
4.07
×
0.86+9.12
143
7
×
27
+
2
7
×
563
216
0
÷
〔(
83-79
< br>)
×
18
〕
.
5.67
×
0.2-0.62
0.043
×
24+0.875
0.78+5.436+1
p>
240
×
78
÷<
/p>
(
154-115
)
〔
75-
(
12+18
)〕
÷
15
p>
280
+
840
÷
24
×
5
.
325
÷
13
×
(266
-
250)
p>
85
×
(95
-<
/p>
1440
÷
24)
588
70
÷
(105
+
20
×
2)
p>
1437
×
27
+
27
×
563
81432
÷
(13
×
52
+
78)
[37
.85-
(
7.85+6.4
)
]
×
30
p>
(
947
-
599
)+
76
×
6
4
[
192
-(
54
+
38
)
]
×
67
(
947
< br>-
599
)+
76
×
64
2.881
÷
0.43
-<
/p>
0.24
×
3.5
31.8 3.2
×
4
)
÷
5
36.72
÷
4.25
×
9.9
0.8
×
[
(10
-
6.76)
÷
1.2]
.
p>
36
×
(913
-
276
÷
23)
81432
÷
(13
×
52
+
78)
< br>60
-
(9.5
+
28.9)
÷
0.18
0.8
×
〔
15.5-(3.21+5.79)
〕
194
-
64.8
÷
1.8
×
0.9
< br>3.416
÷
(
0.016
p>
×
35
)
(6.8-6.8
×
0.55)
÷
8.5
.
0.12
×
4.8
< br>÷
0.12
×
4.8
(
58+37
)
÷
(
64-9
×
5
)
812-700
< br>÷
(
9+31
×
11
)
156
×
[(17.7-7.2)
÷
3]
(
3.2
×
1.5+2.5
)
÷
< br>1.6
85+14
×
(
14+208
÷
26
)
120-36
×
4
÷
18+35
3.2
×
(
1.5+2.5
)
÷
< br>1.6
(6.8-6.8
×
0.55)
÷
8.5
(
3.2
×
1.5+2.5
)
< br>÷
1.6
15-10.75
×
0.4-5.7
p>
(
58+37
)
÷
(
64-9
×
5
)
(<
/p>
3.2
×
1.5+2.5
)
÷
1.6
.
9.72
×
1.6-18.305
÷
7
p>
(
58+37
)
÷
(
64-9
×
5
)
0.12
×
4.8
< br>÷
0.12
×
4.8
120-36
×
4
÷
18+35
347+45
×
2-4160
÷
52
[
p>
(
7.1-5.6
)
×
0.9-1.15]
÷
2.5
5.4
÷
[2.6
×
(
3.7-2.9
)
+0.62]