题目内容

怎样算简便就怎样算.
3
10
-
3
10
÷6
1
3
×
3
4
÷(
3
4
-
5
12
1
2
×3.2+5.6×0.5+1.2×50%
[
5
3
-(
2
5
+
3
4
)]÷
31
4
99×
97
98
11.58-(7
5
11
+1.58)
①6÷
3
10
-
3
10
÷6,
=6×
10
3
-
3
10
×
1
6

=20-
1
20

=19
19
20


1
3
×
3
4
÷(
3
4
-
5
12
),
=
1
4
÷
1
3

=
3
4


1
2
×3.2+5.6×0.5+1.2×50%,
=0.5×3.2+5.6×0.5+1.2×0.5,
=(3.2+5.6+1.2)×0.5,
=10×0.5,
=5;

④[
5
3
-(
2
5
+
3
4
)]÷
31
4

=[
5
3
-
23
20
31
4

=
31
60
×
4
31

=
1
15


⑤99×
97
98

=(98+1)×
97
98

=98×
97
98
+1×
97
98

=97+
97
98

=97
97
98


⑥11.58-(7
5
11
+1.58),
=11.58-7
5
11
-1.58,
=11.58-1.58-7
5
11

=10-7
5
11

=2
6
11
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网