看谁算得快.1-12-3878-512+160.75+112+11418+0.25+0.625.-数学

题文

看谁算得快.
1-
1
2
-
3
8

7
8
-
5
12
+
1
6

0.75+
1
12
+
1
14

1
8
+0.25+0.625.
题型:解答题  难度:中档

答案


(1)1-
1
2
-
3
8

=
1
2
-
3
8

=
1
8


(2)
7
8
-
5
12
+
1
6

=
11
24
+
1
6

=
5
8


(3)0.75+
1
12
+
1
14

=
5
6
+
1
14

=
19
21


(4)
1
8
+0.25+0.625,
=
1
8
+0.625+0.25,
=0.75+0.25,
=1.

据专家权威分析,试题“看谁算得快.1-12-3878-512+160.75+112+11418+0.25+0.625.-数学..”主要考查你对  分数的加法和减法(异分母)  等考点的理解。关于这些考点的“档案”如下:

分数的加法和减法(异分母)