题目内容

计算(能简便的要简便)
27.5+21÷14×7      
234×99-766
4
3
×
8
5
-
3
5
×
4
3

(0.4+
1
3
)÷
22
5
+
3
4

[6+
1
2
×(
5
12
-
3
8
)]×
5
3
(1)27.5+21÷14×7,
=27.5+10.5,
=38;
(2)234×99-766,
=234×100-(234+766),
=23400-1000,
=22400;
(3)
4
3
×
8
5
-
3
5
×
4
3

=(
8
5
-
3
5
)×
4
3

=1×
4
3

=
4
3

(4)(0.4+
1
3
)÷
22
5
+
3
4

=(
2
5
+
1
3
÷
22
5
+
3
4

=
11
15
×
5
22
+
3
4

=
1
6
+
3
4

=
11
12

(5)[6+
1
2
×(
5
12
-
3
8
)]×
5
3

=[6+
1
2
×
1
24
5
3

=
289
48
×
5
3

=
1445
144
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