六年级四则混合运算和解方程练习
钿头银篦击节碎-
四则混合运算和解方程练习
p>
3
1
3
3
8
15
7
1
1
2.5×
×
0.4×
2
15
-2.25-7
×
[
+(<
/p>
7
3
14
4
p>
9
16
16
-
4
)÷
2
]
p>
4
3
2
4
5
5
5
10×
[(
5
-0.5)
÷
(2.7-4.25×
)÷
2.8×
1
×
(5÷
5)
7
p>
5
7
7
6
-
6
÷
(7
1<
/p>
1
1
2
p>
1
5
3
+7
3
×
2+7
3
)÷
4
7
×
[(4
3
-3.5) ÷
8
]
p>
(2
3
2
5
12
2.5÷
8+3.5×
1
4
+
3
-1
6
)×
8
+0.125
p>
[(0.05+
1
2
5.35×
0.25+2.65×<
/p>
1
4
)÷
p>
0.25-
5
]×
0.125
4
求未知数
X
(1)4+0.7X=102
(
2
)
X-0.8X-6=16
(4)
3
5
×
1
p>
2
-2X=
1
5<
/p>
1
1
5
(5)
(
6
3
)
÷
X
=
7
2
(6)
(
7
)
X+
4
6
1
9
X=4
.5
×
5
(8) (X-2.3)
×
1.5=
7
2
(9)4X-3.2
3.8+1
3<
/p>
14
+6.2+3
2
7
(9.5+9
1
2
+9
1
2
+9.5)
×
12
1
2
3
1
3
-(1
5
7
+
1
3
2
p>
8
÷
1
4
)×
1
5
(3)X-
3
4
X=
3
8
x
0
p>
.
2
15
0
.
6
×
5=2.5
1