Question

tính bằng cách thuận tiên

a,3,25x2+3,25x4+3,25x3+3,25

Answer 1

\(3,25\times2+3,25\times4+3,25\times3+3,25\\=3,25\times(2+4+3+1)\\=3,25\times(6+3+1)\\=3,25\times(9+1)\\=3,25\times10\\=32,5\)

Answer 2

3,25 x 2 + 3,25 x 4 + 3,25 x 3 + 3,25

= 3,25 x 2 + 3,25 x 4 + 3,25 x 3 + 3,35 x 1

= 3,25 x (2+4+3+1)

= 3,35 x 10

= 33,5

Answer 3

3,25 x 2 + 3,25 x 4 + 3,25 x 3 + 3,25

= 3,25 x 2 + 3,25 x 4 + 3,25 x 3 + 3,25 x 1

= 3,25 x ( 2 + 4 + 3 + 1 )

= 3,25 x 10

= 32,5