来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/06/13 12:44:50
(1)
4
5×3.5+5.5×80%+0.8
=(3.5+5.5+1)×0.8
=10×0.8
=8;
(2)
11
16+
8
13-(
11
16-
8
13)
=(
11
16-
11
16)+(
8
13+
8
13)
=0+
16
13
=1
3
13;
(3)
1
3÷(
2
3-
2
5)×
3
5
=
1
3÷
4
15×
3
5
=
1
3×
15
4×
3
5
=
3
4.