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cobelolen
- 02021-08-28T19:01:48+00:00 28/08/2021 at 19:01Reply
a]234 x 35+234 x 75
Cách 1:
234 x 35+234 x 75
= 234×[35+75]
= 234×110
= 25740
Cách 2:
234 x 35+234 x 75
=8190+17550
=25740
b]765 x 123-765 x 23
Cách 1:
765 x 123-765 x 23
=756×[123-23]
=756×100
75600
Cách 2:
765 x 123-765 x 23
=92988-17388
=75600
c]476 x [45+55]
Cách 1:
476 x [45+55]
=476×100
=47600
Cách 2:
476 x [45+55]
=476×45+476×55
=21420+26180
=47600
d]2415 : 5 : 3
2415 : 5 : 3
=483 :3
=161
e] [76 x 28]:7
[76 x 28]:7
=2128:7
204
f] [175 + 29070] : 5
Cách 1:
[175 + 29070] : 5
=29245:5
=5849
Cách 2:
[175 + 29070] : 5
=175:5+29070:5
=35+5814
=5849
g][3224-1236]:4
Cách 1:
[3224-1236]:4
=1988:4
=497
Cách 2:
[3224-1236]:4
=3224:4-1236:4
=806-309
=497
Xin câu trả lời hay nhất :3
kimnguen
- 02021-08-28T19:02:04+00:00 28/08/2021 at 19:02Reply
Đáp án:
ở dưới
Giải thích các bước giải:
1/234 x 35+234 x 75
C1:
234 x 35 + 234 x 75
= 234 x [35+75]
= 234 x 110
= 25740
C2:
234 x 35 + 234 x 75
=8190 + 17550
=25740
2/765 x 123-765 x 23
C1:
765 x 123-765 x 23
=756 x [123-23]
=756 x 100
=75600
C2:
765 x 123-765 x 23
=92988 17388
=75600
3/476 x [45+55]
C1:
476 x [45+55]
=476 x 100
=47600
C2:
476 x [45+55]
=476 x 45+476 x 55
=21420 + 26180
=47600
4/2415 : 5 : 3
C1:
2415 : 5 : 3
=2415 : 5 : 3
=483 :3
=161
C2:
2415 : 5 : 3
=2415:[5×3]
=2415:15
=161
5/[76 x 28]:7
C1:
[76 x 28]:7
=2128:7
=304
C2:[76 x 28]:7
=76 x 28/7
=304
6/[175 + 29070] : 5
C1:
[175 + 29070] : 5
=29245:5
=5849
C2:
[175 + 29070] : 5
=175:5+29070:5
=35+5814
=5849
7/[3224-1236]:4
C1:
[3224-1236]:4
=1988:4
=497
C2:
[3224-1236]:4
=3224:4-1236:4
=806-309
=497