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能简便计算的简便计算:25×158+13×3525×167×78227×(15×2728)×21525-25×1318×(59-16)(23+34-56)×241213×3.9×56725×103-725×2-725(16-17)×6×743×542
题目详情
能简便计算的简便计算:
| 25×
|
| ||||||||||||||||||
| 18×(
| (
| ||||||||||||||||||
|
| (
| ||||||||||||||||||
43×
| 49×
| 73×
|
▼优质解答
答案和解析
×
+
×
=
+
=
;
25×
×
=25×(
×
)
=25×2
=50;
×(15×
)×
=(
×
)×(15×
)
=
×2
=
;
-
×
=
−
=
;
18×(
-
)
=18×
−18×
=10-3
=7;
(
+
-
)×24
=
2 |
5 |
15 |
8 |
1 |
3 |
3 |
5 |
=
3 |
4 |
1 |
5 |
=
9 |
20 |
25×
16 |
7 |
7 |
8 |
=25×(
16 |
7 |
7 |
8 |
=25×2
=50;
2 |
27 |
27 |
28 |
2 |
15 |
=(
2 |
27 |
27 |
28 |
2 |
15 |
=
1 |
14 |
=
1 |
7 |
2 |
5 |
2 |
5 |
1 |
3 |
=
2 |
5 |
2 |
15 |
=
4 |
15 |
18×(
5 |
9 |
1 |
6 |
=18×
5 |
9 |
1 |
6 |
=10-3
=7;
(
2 |
3 |
3 |
4 |
5 |
6 |
=
作业帮用户
2017-11-16
|
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