Question

Tính bằng cách thuận tiện:

a) \(\frac{14}{15}\) + \(\frac{3}{11}\)+\(\frac{1}{15}\) + \(\frac{3}{11}\)+\(\frac{10}{22}\)         b) 9,25 + 9,25 x 8 + 9,25

Answer 1

a)=(14/15+1/15)+(3/11+3/11+5/11)

=1+(3+3+5/11)

=1+1

=2

b) 9,25 + 9,25 x 8 + 9,25

=9,25*(8+1+1)

=9,25*10

=92,5

Answer 2

a) 14/15 + 3/11 + 1/15 + 3/11 + 10/22

= ( 14/15 + 1/15 ) + ( 3/11 + 3/11 + 10/22 )

= 1 + ( 3/11 + 3/11 + 5/11 )

= 1 + 1

=2

b) 9,25 + 9,25 x 8 + 9,25

= 9,25 x 1 + 9,25 x 8 + 9,25 x 1

= 9,25 x ( 1 + 1 + 8 )

= 9,25 x 10

= 92,5

Answer 3

a) 14/15 + 3/11 + 1/15 + 3/11 + 10/22

= ( 14/15 + 1/15 ) + ( 3/11 + 3/11 + 10/22 )

= 1 + ( 3/11 + 3/11 + 5/11 )

= 1 + 1

=2

b) 9,25 + 9,25 x 8 + 9,25

= 9,25 x 1 + 9,25 x 8 + 9,25 x 1

= 9,25 x ( 1 + 1 + 8 )

= 9,25 x 10

= 92,5

Nguồn Phạm Thị Quỳnh

Answer 4

a, 14/15 + 3/11 + 1/15 + 3/11 + 10/22                   

= 14/15 + 3/11 + 1/15 + 3/11 + 5/11

= ( 14/15 + 1/15 ) + ( 3/11 + 3/11 + 5/11 )

=  15/15 + 11/11

= 1 + 1 = 2

    b, 9,25 + 9,25 x 8 + 9,25 = 9,25 x 1 + 9,25 x 8 + 9,25 x 1 = 9,25 x ( 8 + 2 )  = 9,25 x 10 = 92,5

Answer 5

Nobita Kun đi chép bài kìa!