Question

1+2+3+4+5+6+7+8+9+10=A

5x9+5=B

(A+B):3 du ?

 

 

Answer 1

Ta có:A=1+2+3+4+5+6+7+8+9+10 =55

B=5x9+5=50

=>(A+B):3=(55+50):3

               =105:3

               =35

=>Dư 0

Answer 2

ta có: A = 1 + 2+3+4+5+6+7+8+9+10

A= ( 1+10) x 10 : 2

A = 55

B = 5 x 9 + 5 = 50

=> ( A+B) :3 = ( 55 +50) : 3 = 105 : 3 = 35 dư 0

Answer 3

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = A = 45

5 x 9 + 5 = B = 50

(A + B) : 3 

(45 + 50) : 3 = 31 dư 2

Answer 4

(a+b):3=35

Answer 5

-A=1+2+3+4+5+6+7+8+9+10

 A=55

-B=(5x9)+5

 B=45+5

 B=50

Vậy (A+B):3 =(55+50):3

                    =105:3

                    =35

Answer 6

A=1+2+3+4+5+6+7+8+9+10=55

B=5x9+5=50

A+B=54+50=105

\((A+B)\div3=105\div3=35\)không dư

chúc bạn học tốt

Answer 7

1+2+3+4+5+6+7+8+9+10 = A

=) A = 55

5×9+5 = B

=) B = 50

A : B = 55 : 50 

A : B = 1 ( dư 5 )

Answer 8

A=(1+10)+(2+9)+(3+8)+(4+7)+(5+6)=11x5=55

B=45+5=50

Ta có (55+50):3=35(dư 0)

Answer 9

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = A

A = 55

5 x 9 + 5 = B

B = 50

(A + B) : 3  dư 0.

Answer 10

vì 1+2+3+4+5+6+7+8+9+10 =A

=> A=55

vì 5x9+5=B

=> B=50

=> A+B =55+50=105

=>(A+B):3=105:3 =35

=> (A+B) :3 dư 0