Question

tính bằng cách thuận tiện

1,25 x 57 + 1,25 x 41 + 2,5

Answer 1

1,25 x 57 + 1,25 x 41 + 2,5

= 1,25 x 57 + 1,25 x 41 + 1,25 x 2

= 1,25 x (57 + 41 + 2)

= 1,25 x 100

= 125

Answer 2

`1,25  \times 57 + 1,25 \times 41 + 2,5`

`= 1,25 \times 57 + 1,25 \times 41 + 1,25 \times 2`

`= 1,25 \times (57 + 41 + 2)`

`= 1,25 \times 100`

`=125`

Answer 3

= 1,25 x (57+41) + 2,5

= 122,5 + 2,5

= 125

Answer 4

1,25 x 57 + 1,25 x 41 + 2,5

= 1,25 x (57+41) + 1,25 x 2

= 1,25 x  (98+2)

= =1,25 x 100 =125

Answer 5

1,25 x 57 + 1,25 x 41 + 2,5

= 1,25 x 57 + 1,25 x 41 + 1,25 x 2

= 1,25 x (57 + 41 + 2)

= 1,25 x 100

= 125

Answer 6

1,25×(51+41)+1,25×2=1,25×(98+2)=1,25×100=125