42 : 6 = 6

24 : 6 = 4

48 : 6 = 8

30 : 6 = 5

54 : 6 = 9

36 : 6 = 6

18 : 6 = 3

30: 5 = 6

12 : 6 = 2

6 : 6 = 1

60 : 6 = 10

30 : 3 = 10

42:6=7

24:6=4

48:6=8

30:6=5

54:6=9

36:6=6

18:6=3

30:5=6

12:6=2

6:6=1

60:6=10

30:3=10

42 : 6 = 7        48 : 6 = 8        6 : 6 = 1        12 : 3 = 4

18 : 6 = 3        54 : 6 = 9        30 : 6 = 5        12 : 4 = 3

6 : 6 = 1

12 : 6 = 2

18 : 6 = 3

24 : 6 = 4

30 : 6 = 5

36 : 6 = 6

42 : 6 = 7

48 : 6 = 8

54 : 6 = 9

60 : 6 = 10

gio con hoi bang cuu chuong ????

48 : 6 = 8       42 : 6 = 7       6 : 6 = 1       18 : 6 = 3

24 : 6 = 4       36 : 6 = 6       30 : 6 = 5       18 : 3 = 6

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các bạn vào link này để thi đua cùng mình nha:

https://iostudy.net/ref/132310

ai vào mình tích đúng 5 lần

a: \(=\dfrac{6}{4}\left(\dfrac{4}{4\cdot8}+\dfrac{4}{8\cdot12}+...+\dfrac{4}{76\cdot80}\right)\)

\(=\dfrac{3}{2}\left(\dfrac{1}{4}-\dfrac{1}{8}+\dfrac{1}{8}-\dfrac{1}{12}+...+\dfrac{1}{76}-\dfrac{1}{80}\right)\)

\(=\dfrac{3}{2}\cdot\dfrac{19}{80}=\dfrac{57}{160}\)

b: \(=2\left(\dfrac{6}{6\cdot12}+\dfrac{6}{12\cdot18}+...+\dfrac{6}{54\cdot60}\right)\)

\(=2\left(\dfrac{1}{6}-\dfrac{1}{12}+\dfrac{1}{12}-\dfrac{1}{18}+...+\dfrac{1}{54}-\dfrac{1}{60}\right)\)

\(=2\cdot\dfrac{9}{60}=\dfrac{18}{60}=\dfrac{3}{10}\)

6 + 12 + 18 + 24 + 30 + 36 + 42 + 48 + 54 + 60

= ( 6 + 60 ) + ( 12 + 54 ) + ( 18 + 48 ) + ( 24 + 42 ) + ( 30 + 36 )

= 66 + 66 + 66 + 66 + 66

= 66 x 5 

 = 330

330                                             

\(\dfrac{2}{7}=\dfrac{6}{21}=\dfrac{16}{56}=\dfrac{30}{105}\)

cảm ơn bn

công àaaaaaaaaaaaaaaaaa