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用递等式计算(请注意选择适当的方法)20.86-5.63-4.37624÷6-3812.5×32×25%821÷[(35+710)×526](58+712)×2469÷(2.4×13+1.5)
题目详情
用递等式计算(请注意选择适当的方法)
20.86-5.63-4.37 624÷6-38 12.5×32×25%
÷[(
+
)×
](
+
)×24 69÷(2.4×
+1.5) 20.86-5.63-4.37 624÷6-38 12.5×32×25% 20.86-5.63-4.37 624÷6-38 12.5×32×25%
÷[(
+
)×
](
+
)×24 69÷(2.4×
+1.5)
÷[(
+
)×
]
÷[(
+
)×
]
8 21 8 8 21 21
+
)×
]
3 5 3 3 5 5
)×
]
7 10 7 7 10 10
]
5 26 5 5 26 26 (
+
)×24
+
)×24
5 8 5 5 8 8
)×24
7 12 7 7 12 12 69÷(2.4×
+1.5)
+1.5)
1 3 1 1 3 3
20.86-5.63-4.37 | 624÷6-38 | 12.5×32×25% | ||||||||||||||
| (
| 69÷(2.4×
|
20.86-5.63-4.37 | 624÷6-38 | 12.5×32×25% | ||||||||||||||
| (
| 69÷(2.4×
|
8 |
21 |
3 |
5 |
7 |
10 |
5 |
26 |
5 |
8 |
7 |
12 |
1 |
3 |
8 |
21 |
3 |
5 |
7 |
10 |
5 |
26 |
5 |
8 |
7 |
12 |
1 |
3 |
8 |
21 |
3 |
5 |
7 |
10 |
5 |
26 |
8 |
21 |
3 |
5 |
7 |
10 |
5 |
26 |
8 |
21 |
3 |
5 |
7 |
10 |
5 |
26 |
3 |
5 |
7 |
10 |
5 |
26 |
7 |
10 |
5 |
26 |
5 |
26 |
5 |
8 |
7 |
12 |
5 |
8 |
7 |
12 |
5 |
8 |
7 |
12 |
7 |
12 |
1 |
3 |
1 |
3 |
1 |
3 |
▼优质解答
答案和解析
(1)20.86-5.63-4.37
=20.86-(5.63+4.37)
=20.86-10
=10.86;
(2)624÷6-38
=104-38
=66;
(3)12.5×32×25%
=12.5×(4×8)×25%
=(12.5×8)×(4×25%)
=100×1
=100;
(4)
÷[(
+
)×
]
=
÷[
×
]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
8 21 8 8 821 21 21÷[(
+
)×
]
=
÷[
×
]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
3 5 3 3 35 5 5+
)×
]
=
÷[
×
]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
7 10 7 7 710 10 10)×
]
=
÷[
×
]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
5 26 5 5 526 26 26]
=
÷[
×
]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
8 21 8 8 821 21 21÷[
×
]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
13 10 13 13 1310 10 10×
]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
5 26 5 5 526 26 26]
=
÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
8 21 8 8 821 21 21÷
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
1 4 1 1 14 4 4
=
;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
32 21 32 32 3221 21 21;
(5)(
+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
5 8 5 5 58 8 8+
)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
7 12 7 7 712 12 12)×24
=
×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
5 8 5 5 58 8 8×24+
×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
7 12 7 7 712 12 12×24
=15+14
=29;
(6)69÷(2.4×
+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
1 3 1 1 13 3 3+1.5)
=69÷(0.8+1.5)
=69÷2.3
=30.
=20.86-(5.63+4.37)
=20.86-10
=10.86;
(2)624÷6-38
=104-38
=66;
(3)12.5×32×25%
=12.5×(4×8)×25%
=(12.5×8)×(4×25%)
=100×1
=100;
(4)
8 |
21 |
3 |
5 |
7 |
10 |
5 |
26 |
=
8 |
21 |
13 |
10 |
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
8 |
21 |
3 |
5 |
7 |
10 |
5 |
26 |
=
8 |
21 |
13 |
10 |
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
3 |
5 |
7 |
10 |
5 |
26 |
=
8 |
21 |
13 |
10 |
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
7 |
10 |
5 |
26 |
=
8 |
21 |
13 |
10 |
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
5 |
26 |
=
8 |
21 |
13 |
10 |
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
8 |
21 |
13 |
10 |
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
13 |
10 |
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
5 |
26 |
=
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
8 |
21 |
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
1 |
4 |
=
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
32 |
21 |
(5)(
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
5 |
8 |
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
7 |
12 |
=
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
5 |
8 |
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
7 |
12 |
=15+14
=29;
(6)69÷(2.4×
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
1 |
3 |
=69÷(0.8+1.5)
=69÷2.3
=30.
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