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> 计算:(1)80-20+5(2)18+(98-27)(3)(24+0.5)-(18-6)(4)239x+6x4-2x1x-数学
计算:(1)80-20+5(2)18+(98-27)(3)(24+0.5)-(18-6)(4)239x+6x4-2x1x-数学
题目简介
计算:(1)80-20+5(2)18+(98-27)(3)(24+0.5)-(18-6)(4)239x+6x4-2x1x-数学
题目详情
计算:
(1)
80
-
20
+
5
(2)
18
+(
98
-
27
)
(3)
(
24
+
0.5
)-(
1
8
-
6
)
(4)
2
3
9x
+6
x
4
-2x
1
x
题型:解答题
难度:中档
来源:不详
答案
(1)原式=4
5
-2
5
+
5
=3
5
;
(2)原式=3
2
+7
2
-3
3
=10
2
-3
3
;
(3)原式=
24
+
class="stub"1
2
-
class="stub"1
8
+
6
=2
6
+
2
2
-
2
4
+
6
=3
6
+
2
4
.
(4)原式=2
x
+3
x
-2
x
=3
x
.
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题目简介
计算:(1)80-20+5(2)18+(98-27)(3)(24+0.5)-(18-6)(4)239x+6x4-2x1x-数学
题目详情
(1)
(2)
(3)(
(4)
答案
(2)原式=3
(3)原式=
(4)原式=2