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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 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)
÷[
×(
+
)] (4)
×
+
×25%+1÷4 (3)
÷[
×(
+
)]
÷[
×(
+
)]
5 5 14 14
6 6 7 7
4 4 9 9
1 1 6 6 (4)
×
+
×25%+1÷4
×
+
×25%+1÷4
4 4 9 9
1 1 4 4
5 5 9 9
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)
| (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)
| (4)
|
(1)450+450÷18
(2)(0.64÷16+1.06)÷22
(1)450+450÷18
(2)(0.64÷16+1.06)÷22
5 |
14 |
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7 |
4 |
9 |
1 |
6 |
4 |
9 |
1 |
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9 |
5 |
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7 |
4 |
9 |
1 |
6 |
5 |
14 |
6 |
7 |
4 |
9 |
1 |
6 |
5 |
14 |
6 |
7 |
4 |
9 |
1 |
6 |
4 |
9 |
1 |
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1 |
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4 |
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▼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)
÷[
×(
+
)],
=
÷[
×
],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
5 5 514 14 14÷[
×(
+
)],
=
÷[
×
],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
6 6 67 7 7×(
+
)],
=
÷[
×
],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
4 4 49 9 9+
)],
=
÷[
×
],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
1 1 16 6 6)],
=
÷[
×
],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
5 5 514 14 14÷[
×
],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
6 6 67 7 7×
],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
11 11 1118 18 18],
=
÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
5 5 514 14 14÷
,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
11 11 1121 21 21,
=
×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
5 5 514 14 14×
,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
21 21 2111 11 11,
=
;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
15 15 1522 22 22;
(4)
×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
4 4 49 9 9×
+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
1 1 14 4 4+
×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
5 5 59 9 9×25%+1÷4,
=
×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
4 4 49 9 9×0.25+
×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
5 5 59 9 9×0.25+0.25,
=0.25×(
+
+1),
=0.25×2,
=0.5.
4 4 49 9 9+
+1),
=0.25×2,
=0.5.
5 5 59 9 9+1),
=0.25×2,
=0.5.
=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 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
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 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
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 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
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 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
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 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
5 |
14 |
6 |
7 |
11 |
18 |
=
5 |
14 |
11 |
21 |
=
5 |
14 |
21 |
11 |
=
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
6 |
7 |
11 |
18 |
=
5 |
14 |
11 |
21 |
=
5 |
14 |
21 |
11 |
=
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
11 |
18 |
=
5 |
14 |
11 |
21 |
=
5 |
14 |
21 |
11 |
=
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
5 |
14 |
11 |
21 |
=
5 |
14 |
21 |
11 |
=
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
11 |
21 |
=
5 |
14 |
21 |
11 |
=
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
5 |
14 |
21 |
11 |
=
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
21 |
11 |
=
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
15 |
22 |
(4)
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
4 |
9 |
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
1 |
4 |
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
5 |
9 |
=
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
4 |
9 |
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
5 |
9 |
=0.25×(
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
4 |
9 |
5 |
9 |
=0.25×2,
=0.5.
5 |
9 |
=0.25×2,
=0.5.
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