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能简便的就简便.67.5×0.52+3.25×5.236×(56+79)14317-6.46-3.54(119+217)×19×17120×19+120837-(537-611)
题目详情
能简便的就简便.
67.5×0.52+3.25×5.2 | 36×(
| 14
| ||||||||||||||
(
|
| 8
|
▼优质解答
答案和解析
(1)67.5×0.52+3.25×5.2
=6.75×5.2+3.25×5.2
=(6.75+3.25)×5.2
=10×5.2
=52;
(2)36×(
+
)
=36×
+36×
=30+28
=58;
(3)14
-6.46-3.54
=14
-(6.46+3.54)
=14
-10
=4
;
(4)(
+
)×19×17
=
×19×17+
×19×17
=17+38
=55;
(5)
×19+
=
×(19+1)
=
×20
=1;
(6)8
-(5
-
)
=8
-5
+
=3+
=3
.
=6.75×5.2+3.25×5.2
=(6.75+3.25)×5.2
=10×5.2
=52;
(2)36×(
5 |
6 |
7 |
9 |
=36×
5 |
6 |
7 |
9 |
=30+28
=58;
(3)14
3 |
17 |
=14
3 |
17 |
=14
3 |
17 |
=4
3 |
17 |
(4)(
1 |
19 |
2 |
17 |
=
1 |
19 |
2 |
17 |
=17+38
=55;
(5)
1 |
20 |
1 |
20 |
=
1 |
20 |
=
1 |
20 |
=1;
(6)8
3 |
7 |
3 |
7 |
6 |
11 |
=8
3 |
7 |
3 |
7 |
6 |
11 |
=3+
6 |
11 |
=3
6 |
11 |
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