问题 解答题
直接写出得数
5.17+1.96+4.83=12.5×0.34×8=5.01×101-5.01=
7
12
-
1
3
)×
2
7
=
5×(
1
5
-
1
6
)×6=
答案

(1)5.17+1.96+4.83,

=(5.17+4.83)+1.96,

=10+1.96,

=11.96;

(2)12.5×0.34×8,

=12.5×8×0.34,

=100×0.34,

=34;

(3)5.01×101-5.01,

=5.01×(101-1),

=5.01×100,

=501;

(4)﹙

7
12
-
1
3
)×
2
7

=

1
4
×
2
7

=

1
14

(5)5×(

1
5
-
1
6
)×6,

=(5×6)×(

1
5
-
1
6
),

=5×6×

1
5
-5×6×
1
6

=5×

1
5
×6-6×
1
6
×5,

=1×6-1×5,

=6-5,

=1.

问答题
单项选择题