Question

tính nhanh

64*16+ 81*4 + 17*16

 

Answer 1

64*16+ 81*4 + 17*16

= 256 . 4 + 81 . 4 + 68 . 4

= 4 ( 256 + 81 + 68 )

= 4 . 405 = 1620

Answer 2

    64 . 16 + 81 . 4 + 17 . 16

= 16 ( 64 + 17 ) + 81 . 4

= 16 . 81 + 81 . 4

= 81 ( 16 + 4 )

= 81 . 20

= 1620

Hok tốt

Answer 3

64x16+81x4+17x16

=(64x16+17x16)+81x4

=16(64+17)+81x4

=16x81+81x4

=81x(16+4)

=81x20

=1620

Answer 4

= 16.(64 +17)+81.4

=16.81+81.4

=81. (16+4)

=81.20

=1620

Answer 5

64*16+81*4+17*16

=256*4+81*4+68*4

=(256+81+68)*4

=405*4

=1620

Answer 6

64x 16 + 81 x 4+ 17 x 16

=16 x (64 + 17 ) + 81 x 4

=16 x 81+81x 4

= 81 x ( 16 + 4 )

= 81 x 20 

= 1620