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(2011•秀屿区)计算下面各题,能用简便方法算的就用简便方法算.(1)450+450÷18(2)(0.64÷16+1.06)÷22(3)514÷[67×(49+16)](4)49×14+59×25%+1÷4

题目详情
(2011•秀屿区)
计算下面各题,能用简便方法算的就用简便方法算.
(1)450+450÷18

(2)(0.64÷16+1.06)÷22
(3)
5
14
÷[
6
7
×(
4
9
+
1
6
)]
(4)
4
9
×
1
4
+
5
9
×25%+1÷4
计算下面各题,能用简便方法算的就用简便方法算.
(1)450+450÷18

(2)(0.64÷16+1.06)÷22
(3)
5
14
÷[
6
7
×(
4
9
+
1
6
)]
(4)
4
9
×
1
4
+
5
9
×25%+1÷4
计算下面各题,能用简便方法算的就用简便方法算.
(1)450+450÷18
(2)(0.64÷16+1.06)÷22计算下面各题,能用简便方法算的就用简便方法算.
(1)450+450÷18

(2)(0.64÷16+1.06)÷22
(3)
5
14
÷[
6
7
×(
4
9
+
1
6
)]
(4)
4
9
×
1
4
+
5
9
×25%+1÷4
(3)
5
14
÷[
6
7
×(
4
9
+
1
6
)]
5
14
÷[
6
7
×(
4
9
+
1
6
)]
5
14
551414
6
7
6677
4
9
4499
1
6
1166(4)
4
9
×
1
4
+
5
9
×25%+1÷4
4
9
×
1
4
+
5
9
×25%+1÷4
4
9
4499
1
4
1144
5
9
5599
▼优质解答
答案和解析
(1)450+450÷18,
=450+25,
=475;

(2)(0.64÷16+1.06)÷22,
=(0.04+1.06)÷22,
=1.1÷22,
=0.05;

(3)
5
14
÷[
6
7
×(
4
9
+
1
6
)],
=
5
14
÷[
6
7
×
11
18
],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
5
14
555141414÷[
6
7
×(
4
9
+
1
6
)],
=
5
14
÷[
6
7
×
11
18
],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
6
7
666777×(
4
9
+
1
6
)],
=
5
14
÷[
6
7
×
11
18
],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
4
9
444999+
1
6
)],
=
5
14
÷[
6
7
×
11
18
],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
1
6
111666)],
=
5
14
÷[
6
7
×
11
18
],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
5
14
555141414÷[
6
7
×
11
18
],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
6
7
666777×
11
18
],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
11
18
111111181818],
=
5
14
÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
5
14
555141414÷
11
21

=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
11
21
111111212121,
=
5
14
×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
5
14
555141414×
21
11

=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
21
11
212121111111,
=
15
22


(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
15
22
151515222222;

(4)
4
9
×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
4
9
444999×
1
4
+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
1
4
111444+
5
9
×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
5
9
555999×25%+1÷4,
=
4
9
×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
4
9
444999×0.25+
5
9
×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
5
9
555999×0.25+0.25,
=0.25×(
4
9
+
5
9
+1),
=0.25×2,
=0.5.
4
9
444999+
5
9
+1),
=0.25×2,
=0.5.
5
9
555999+1),
=0.25×2,
=0.5.