小学五年级小数乘除法
有道理的爱情-
1
、直接写出得数。
0.45×
2.5
=
0.8×
1.25
=
0.3×
3.6
=
p>
0.3×
0.3
=
10×
0
.07
=
0.3×
1.4
=
0.05×
7
=
0.92×
0.4
=
0.2×
0.26
< br>=
p>
0.14×
4
=
0.02×
0.1
=
1.2×
0.3
=
0.2×
0.4
=
8.2
+
1.8
=
100
-
3
5.22
=
2.3×
4
=
2.5×
0.4
=
2.4×
5
=
0.2
2×
4
=
p>
3.25×
0
=
0.9
-
0
.52
=
3.9
9×
1
=
0×
3.52
=
12.5×
8
=
8÷
10 =
10-1.8-7.2=
0.43+3.57=
2.5×
4×
12=
0.9×
0.8=
7.5x-3x =
1.05×
100=
1÷
0.5=
0.96÷
3=
1.47÷
0.7=
5.4÷
6=
0.16.5×
10=
0.56×
100=
3.78×
100=
4÷
0.8 =
3.215×
100=
0.8×
10=
4.08×
100=
1.1×
0.2 =
0.6×
0.8 =
3×
0.9=
2.5×
0.4=
3.6×
0.4=
12.5×
8=
50×
0.04=
80×
0.3 =
1.1×
9=
0.16×
5
=
1.78
+
2.2 =
9.6÷
0.6 =
1.2×
0.5-0.4 =
0.7÷
0.01 =
2.5×
0.4 =
12
-
3.9=
1.25×
8÷
1.25 =
6.6÷
0.66 =
5.37×
0+4.63 =
3.9
+
2.03
=
p>
4.2÷
3.5
=
1.6+2.4×
0.3 =
2.1
4
-
0.9
=
27
+
45
6
+
73=
0.3×
0.3=
7.2
+
2.8
=
0.9÷
0.01
=
12÷
0.3=
2.8
7÷
0.7
=
13÷
4
=
0.9
6÷
0.3
=
1.5×
0.4
=
7÷
0.25
=
2.5×
0.7×
0.8=
8
p>
-
2.5
=
p>
16÷
1.6
=
5.6×
1.01=
8×
(<
/p>
2.5
+
0.25
)=
0.36
+
0.64
=
64.32÷
16
=
4.2÷
0.1
=
72.8÷
0.8
=
8.4
÷
4.2
=
13.8
+
9.9
=
2.4×
2.5
=
0.05×
0.8
=
2.56
-
0.37
=
1.25×
0.8×
0.5
=
12×
2.5
=
1.2
3×
3
=
p>
3.2÷
1.6
=
3.5
+
3.5×
3
=
19.6÷
2
=
8.8÷
2.2=
0.75×
4
=
(
1.5
+
0.25
)
×
4
=
0.5×
0.8=
8.4×
0.2=
1.6×
0.2
=
7.2×
0.3=
2.8×
0.3
=
0.9÷
0.15=
1.8×
0.4=
5.5÷
0.55=
0.08×
100=
2.2÷
0.11=
5.46
+
4.54=
12.5×
0.8=
0.35×
0.3=
1.4×
5=
2.8×
4=
19.6÷
4=
22.5×
4=
2
、用竖式计算
0.396÷
1.2=
0.756÷
0.36=
15.6×
13=
0.18×
15=
0.025×
14=
3.06×
36=
0.0
4×
0.12
=
3.84×2.6≈
5.7
6
×
3
=
(保留一位小数)
7.15×
22
90.75÷
3.3
3.68×
0.25
16.9÷
0.13
1.55÷
3.9
3.7×
0.016
13.76×
0.8=
5.2×
0.6
8.4×
1.3
6.4×
0.5
4.48×
0.4
5.25×
5
35.4×
4.2
0.042×
0.54
0.76×
0.32
0.25×
0.046
2.52×
3.4
1.08×
25
p>
0.12×
0.5×
0.16
=
4.8×
0.25
=
0.125×1.4≈
(保留两位小数)
2.5÷
0.7=
(保留三位小数)
10.1÷
3.3=
(商用循环小数)
10.75÷
12.5=
(用乘法验算)
3.25×
9.04=
(用除法验算)
3
、脱式计算(能简算的要简算)
2.5×
7.1×
4
16.12×
99
< br>+
16.12
5.2×
0.9
+
0.9
7.28×
99+7.28
4.3×
50×
0.2
64
-
2.
64×
0.5
26×
15.7
+
15.7×
24
(2.275
+
0.625)×
0.28
3.94+34.3×
0.2
1.2×
(9.6÷
2.4)÷
4.8
8.9×
1.1×
4.7
2.7×
5.4×
3.9
3.6×
9.85-5.46
8.05×
3.4+7.6
6.58×
4.5×
0.9
2.8×
0.5+1.58
32
+<
/p>
4.9
-
0.9
4.8
-
4.8×
0.5
(1.
25
-
0.125)×
8
4.8×
100.1
56.5×
99
+
56.5
7.0
9×
10.8
-
0.8×
7.09
4.85
+ 0.35 ÷
1.4
8.7
×
17.4 - 8.7 ×
7.4
12.
5×
0.4×
2.5×
8
0.87×
3.16+4.64
9.5×
101
0.68 ÷
(
5.2
-3.5
)
×
1.25
40.5 ÷
0.81
×
0.18
4.8
×
(
15 ÷
2.4
)
2
.
13.
×
0.×
8257
6.81+6.81×
99
0.25×
185×
40
p>
4.4×
0.8
-
3.4×
0.8
(9.37+9
< br>.
37+9
.
37+9
.
37)×
2
.
5
4
p>
.
2.×
1.
+<
/p>
1.×
1.75
2.37×
6.3+2.37×
3.7
2.5×
1.25×
0.32
3.8×
10.1
2.5×
(3.8×
0.04)
7.69×
101
3.8×
10.1
0.25×
39+0.25
0.125×
72
46×
0.33+54×
0.33
(8×
5.27) ×
1.25
6.81+6.81×
99
0.25×
185×
40
6.8×
0.75÷
0.5
3.75÷
0.125
–
2.75
1.53+23.4÷
7.2
9.5×
99
13.5×
0.98
12.5×
8.8
二、解方程:
54-X=24
7X=49
126÷
X=42
13+A=28.5
2.4X=26.4
7.5x
-
3x=18