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共回答了17个问题采纳率:94.1% 举报
(1)
13
18 ×5.16+516%×
5
18 ,
=
13
18 ×5.16+5.16×
5
18 ,
=5.16×(
13
18 +
5
18 ),
=5.16×1,
=5.16;
(2)(
8
9 -
1
3 )÷(
7
18 ×
2
3 ),
=
5
9 ÷
7
27 ,
=
15
7 ;
(3)
9
10 ×
4
13 ×
13
18 ,
=
9
10 ×(
4
13 ×
13
18 ),
=
9
10 ×
2
9 ,
=
1
5 ;
(4)
47
6 +
39
10 +
13
6 +6.1,
=(
47
6 +
13
6 )+(6.1+3.9),
=10+10,
=20;
(5)
4
5 ÷(
1
5 +
5
8 ×
4
7 ),
=
4
5 ÷(
1
5 +
5
14 ),
=
4
5 ÷
39
70 ,
=
56
39 ;
(6)
1
8 ×(0.65+
7
20 )÷
1
7 ,
=
1
8 ×1÷
1
7 ,
=
1
8 ×7,
=
7
8 .
1年前
8