Question

Tính nhanh :

45 x 52 + 47 x 45 + 45

Answer 1

   45 x 52 + 47 x 45 + 45

= 45 x 52 + 47 x 45 + 45 x 1 

= 45 x ( 52 + 47 + 1 )

= 45 x 100

= 4500

Answer 2

Ta có: \(45.52+47.45+45\)

    \(=45.52+47.45+45.1\)

     \(=45.\left(52+47+1\right)\)

       \(=45.100=4500\)

Answer 3

45 x 52 + 47 x 45 + 45

= 45 x ( 52 + 47 + 1 )

= 45 x 100

= 4500

Answer 4

45 x 52 + 47 x 45 + 45

= 45 x 52 + 47 x 45 + 45 x 1

= 45 x ( 52 + 47 + 1 )

= 45 x 100 

= 4500

k mk nha  

Answer 5

45 x 52 + 47 x 45 + 45

= 45 x 54 + 47 x 45 + 45 x 1

=45 x [ 52 + 47 + 1 ]

=45 x 100

=4500

Answer 6

= 45 x ( 52 + 47 + 1 )

= 45 x 100

= 4500

Answer 7

4500.k nhá

Answer 8

45 x 52 + 47 x 45 + 45 = 45 x 52 + 47 x 45 + 45 x 1

                                  = 45 x ( 52 + 47 + 1)

                                  = 45 x 100

                                  = 4500

Ai click mik , mik click lại !!!!!!!!!!!!!!!!!!!!!!! 

Answer 9

toán lớp 3