Question

Tính nhanh :

0,25x100x(3:0,4-7,5)x3,5+11x9

Answer 1

\(0.25\cdot100\cdot\left(3:0.4-7.5\right)\cdot3.5+11\cdot9\)

\(=25\cdot\left(12-7.5\right)\cdot3.5+99\)

\(=25\cdot4.5\cdot3.5+99\)

\(=492,75\)

Answer 2

0,25 x 100 x ( 3 : 0,4 - 7,5 ) x 3,5 + 11 x 9

= 25 x ( 12 - 7,5 ) x 3,5 + 99

= 25 x 4,5 x 3,5 + 99

= 25 x 3,5 x 3,5 +(  99 + 1 )

= 3,5 x ( 25 + 100 )

= 3,5 x 125

= 437,5

Answer 3

492,75

Answer 4

99