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选择合适的方法计算.(1)5.6×334+425×3.75(2)[(89+113)×34-0.25]÷117(3)11011÷(4-123)×23(4)53.2÷[(6.5-212)÷812](5)82.4+6.35+17.6+13.65(6)13.82+(738-2.82)-514.
题目详情
选择合适的方法计算.
(1)5.6×3
+4
×3.75 (2)[(
+1
)×
-0.25]÷
(1)5.6×3
+4
×3.75 3
+4
×3.75
3 3 4 4 4
×3.75
2 2 5 5 (2)[(
+1
)×
-0.25]÷
+1
)×
-0.25]÷
8 8 9 9 1
)×
-0.25]÷
1 1 3 3
-0.25]÷
3 3 4 4
1 1 17 17 (3)1
÷(4-1
)×
(4)53.2÷[(6.5-2
)÷8
] (3)1
÷(4-1
)×
1
÷(4-1
)×
10 10 11 11 1
)×
2 2 3 3
2 2 3 3 (4)53.2÷[(6.5-2
)÷8
] 2
)÷8
]
1 1 2 2 8
]
1 1 2 2 (5)82.4+6.35+17.6+13.65 (6)13.82+(7
-2.82)-5
. (5)82.4+6.35+17.6+13.65 (6)13.82+(7
-2.82)-5
. 7
-2.82)-5
.
3 3 8 8 5
.
1 1 4 4
(1)5.6×3
| (2)[(
| ||||||||||||
(3)1
| (4)53.2÷[(6.5-2
| ||||||||||||
(5)82.4+6.35+17.6+13.65 | (6)13.82+(7
|
(1)5.6×3
| (2)[(
| ||||||||||||
(3)1
| (4)53.2÷[(6.5-2
| ||||||||||||
(5)82.4+6.35+17.6+13.65 | (6)13.82+(7
|
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5 |
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8 |
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8 |
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1 |
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1 |
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10 |
11 |
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1 |
2 |
1 |
2 |
10 |
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2 |
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2 |
3 |
10 |
11 |
2 |
3 |
2 |
3 |
10 |
11 |
2 |
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2 |
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2 |
3 |
2 |
3 |
2 |
3 |
1 |
2 |
1 |
2 |
1 |
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1 |
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1 |
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1 |
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▼优质解答
答案和解析
(1)5.6×3
+4
×3.75
=5.6×3.75+4.4×3.75
=(5.6+4.4)×3.75
=10×3.75
=37.5
(2)[(
+1
)×
-0.25]÷
=[
×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
3
3 3 34 4 4+4
×3.75
=5.6×3.75+4.4×3.75
=(5.6+4.4)×3.75
=10×3.75
=37.5
(2)[(
+1
)×
-0.25]÷
=[
×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
4
2 2 25 5 5×3.75
=5.6×3.75+4.4×3.75
=(5.6+4.4)×3.75
=10×3.75
=37.5
(2)[(
+1
)×
-0.25]÷
=[
×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
8 8 89 9 9+1
)×
-0.25]÷
=[
×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1
1 1 13 3 3)×
-0.25]÷
=[
×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
3 3 34 4 4-0.25]÷
=[
×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1 1 117 17 17
=[
×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
20 20 209 9 9×
-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
3 3 34 4 4-
]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1 1 14 4 4]÷
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1 1 117 17 17
=[
-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
5 5 53 3 3-
]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1 1 14 4 4]÷
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1 1 117 17 17
=
×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
17 17 1712 12 12×17
=
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
289 289 28912 12 12
(3)1
÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1
10 10 1011 11 11÷(4-1
)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
1
2 2 23 3 3)×
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
2 2 23 3 3
=
÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
21 21 2111 11 11÷
×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
7 7 73 3 3×
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
2 2 23 3 3
=
×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
21 21 2111 11 11×
×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
3 3 37 7 7×
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
2 2 23 3 3
=
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
6 6 611 11 11
(4)53.2÷[(6.5-2
)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
2
1 1 12 2 2)÷8
]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
8
1 1 12 2 2]
=53.2÷[(6.5-2.5)÷
]
=53.2÷[4×
]
=53.2÷
17 17 172 2 2]
=53.2÷[4×
]
=53.2÷
2 2 217 17 17]
=53.2÷
举报
问题解析 问题解析
(1)把分数化为小数,运用乘法分配律简算.
(2)把小数化为分数,先算小括号内的,再算中括号内的,最后算括号外的.
(3)先算括号内的,然后从左往右依次计算.
(4)先算小括号内的,再算中括号内的,最后算括号外的.
(5)(6)运用加法交换律与结合律简算. (1)把分数化为小数,运用乘法分配律简算.
(2)把小数化为分数,先算小括号内的,再算中括号内的,最后算括号外的.
(3)先算括号内的,然后从左往右依次计算.
(4)先算小括号内的,再算中括号内的,最后算括号外的.
(5)(6)运用加法交换律与结合律简算.名师点评 名师点评
本题考点: 本题考点:
整数、分数、小数、百分数四则混合运算;运算定律与简便运算. 整数、分数、小数、百分数四则混合运算;运算定律与简便运算.
考点点评: 考点点评:
此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算. 此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
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3 |
4 |
2 |
5 |
=5.6×3.75+4.4×3.75
=(5.6+4.4)×3.75
=10×3.75
=37.5
(2)[(
8 |
9 |
1 |
3 |
3 |
4 |
1 |
17 |
=[
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
3 |
4 |
2 |
5 |
=5.6×3.75+4.4×3.75
=(5.6+4.4)×3.75
=10×3.75
=37.5
(2)[(
8 |
9 |
1 |
3 |
3 |
4 |
1 |
17 |
=[
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
2 |
5 |
=5.6×3.75+4.4×3.75
=(5.6+4.4)×3.75
=10×3.75
=37.5
(2)[(
8 |
9 |
1 |
3 |
3 |
4 |
1 |
17 |
=[
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
8 |
9 |
1 |
3 |
3 |
4 |
1 |
17 |
=[
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
1 |
3 |
3 |
4 |
1 |
17 |
=[
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
3 |
4 |
1 |
17 |
=[
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
1 |
17 |
=[
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
20 |
9 |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
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![]()
![]() ![]() |
3 |
4 |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
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![]()
![]() ![]() |
1 |
4 |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
1 |
17 |
=[
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
5 |
3 |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
1 |
4 |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
1 |
17 |
=
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
17 |
12 |
=
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
289 |
12 |
(3)1
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
10 |
11 |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
2 |
3 |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
2 |
3 |
=
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
21 |
11 |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
7 |
3 |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
2 |
3 |
=
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
21 |
11 |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
3 |
7 |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
2 |
3 |
=
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
6 |
11 |
(4)53.2÷[(6.5-2
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
1 |
2 |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
1 |
2 |
=53.2÷[(6.5-2.5)÷
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
17 |
2 |
=53.2÷[4×
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
举报
![]()
![]() ![]() |
2 |
17 |
=53.2÷
作业帮用户
2016-12-08
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![]()
![]() ![]() |
作业帮用户
2016-12-08
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![]()
![]() ![]() |
作业帮用户
2016-12-08
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- 问题解析
- (1)把分数化为小数,运用乘法分配律简算.
(2)把小数化为分数,先算小括号内的,再算中括号内的,最后算括号外的.
(3)先算括号内的,然后从左往右依次计算.
(4)先算小括号内的,再算中括号内的,最后算括号外的.
(5)(6)运用加法交换律与结合律简算.
- 名师点评
-
- 本题考点:
- 整数、分数、小数、百分数四则混合运算;运算定律与简便运算.
-
- 考点点评:
- 此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.


作业帮用户
2016-12-08
举报

- 问题解析
- (1)把分数化为小数,运用乘法分配律简算.
(2)把小数化为分数,先算小括号内的,再算中括号内的,最后算括号外的.
(3)先算括号内的,然后从左往右依次计算.
(4)先算小括号内的,再算中括号内的,最后算括号外的.
(5)(6)运用加法交换律与结合律简算.
- 名师点评
-
- 本题考点:
- 整数、分数、小数、百分数四则混合运算;运算定律与简便运算.
-
- 考点点评:
- 此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.


作业帮用户
2016-12-08
举报
作业帮用户作业帮用户
2016-12-082016-12-08
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- 问题解析
- (1)把分数化为小数,运用乘法分配律简算.
(2)把小数化为分数,先算小括号内的,再算中括号内的,最后算括号外的.
(3)先算括号内的,然后从左往右依次计算.
(4)先算小括号内的,再算中括号内的,最后算括号外的.
(5)(6)运用加法交换律与结合律简算.
(2)把小数化为分数,先算小括号内的,再算中括号内的,最后算括号外的.
(3)先算括号内的,然后从左往右依次计算.
(4)先算小括号内的,再算中括号内的,最后算括号外的.
(5)(6)运用加法交换律与结合律简算.
(2)把小数化为分数,先算小括号内的,再算中括号内的,最后算括号外的.
(3)先算括号内的,然后从左往右依次计算.
(4)先算小括号内的,再算中括号内的,最后算括号外的.
(5)(6)运用加法交换律与结合律简算.
- 名师点评
-
- 本题考点:
- 整数、分数、小数、百分数四则混合运算;运算定律与简便运算.
-
- 考点点评:
- 此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
- 本题考点:
- 整数、分数、小数、百分数四则混合运算;运算定律与简便运算.
- 本题考点:
- 整数、分数、小数、百分数四则混合运算;运算定律与简便运算.
- 考点点评:
- 此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
- 考点点评:
- 此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.






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