Question

0,25 x 1,25 x8 x 40 + 3,5 x 67 + 3,5 x 31 + 7 x1

Answer 1

\(0,25\times1,25\times8\times40+3,5\times67+3,5\times31+7\times1\)

\(=\left(0,25\times40\right)\times\left(1,25\times8\right)+3,5\times\left(67+31\right)+7\)

\(=10\times10+3,5\times98+7\)

\(=100+343+7\)

\(=450\)

Answer 2

450

Answer 3

   0,25 x 1,25 x 8 x 40 + 3,5 x 67 + 3,5 x 31 + 7 x 1

= (0,25 x 40)x(1,25 x 8) + 3,5 x (67 + 31) + 7

= 10 x 10 + 3,5 x 98 + 7

= 100 + 343 + 7

= 100 + 350

= 450