18+0.375=2.8÷0.7=34×0.8=7-325=(13-17)×21=0.04÷0.09=-数学

题文

1
8
+0.375=
2.8÷0.7=
3
4
×0.8=
7-3
2
5
=
(
1
3
-
1
7
)×21=
0.04÷0.09=
题型:解答题  难度:中档

答案

1
8
+0.375
=0.125+0.375
=0.5;
②2.8÷0.7=4;
3
4
×0.8
=
3
4
×
4
5

=
3
5

④7-3
2
5
=3
3
5

⑤(
1
3
-
1
7
)×21
=
1
3
×21-
1
7
×21
=7-3
=4;
⑥0.04÷0.09
=
1
25
÷
9
100

=
1
25
×
100
9

=
4
9

据专家权威分析,试题“18+0.375=2.8÷0.7=34×0.8=7-325=(13-17)×21=0.04÷0.09=-数..”主要考查你对  整数,小数,分数,百分数和比例的混合计算  等考点的理解。关于这些考点的“档案”如下:

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