Question

Tính giá trị biểu thức :

a ) 200 + 300 x 2 - 100 + ( - 100 )

b ) 500 - 100 x 3 + ( - 13 )

Answer 1

a) 200 + 300 x 2 - 100 + ( -100)

=    200 + 600 - 100 + ( -100 )

=        800 - 100 + ( -100 )

=     700 + ( -100 )

= 600

b) 500 - 100 x 3 + ( -13 )

=  500 - 300 + ( -13 )

=   200 + ( -13 )

= 187

Answer 2

a ) 200 + 300 x 2 - 100 + ( - 100 )

= 200 + 600 - 100 + ( - 100 )

= 800 - 100 + ( - 100 )

= 700 + ( - 100 )

= 600

b ) 500 - 100 x 3 + ( - 13 )

= 500 - 300 + ( - 13 )

= 200 + ( - 13 ) 

= 187

Answer 3

a ) 200 + 300 x 2 - 100 + ( - 100 )

= 200 + 600 - 100 + ( - 100 )

= 800 - 100 + ( - 100 )

= 700 + ( - 100 )

= 600

b ) 500 - 100 x 3 + ( - 13 )

= 500 - 300 + ( - 13 )

= 200 + ( - 13 ) 

= 187

Answer 4

a) 200 + 600 - 100 + ( -100 )= 800-100 + (-100)= 700+ (-100)= 600

b) 500 - 300 + (-13)= 200 +(-13)= -187

k cho mình nhé

Answer 5

a) 200+300 x2 -100 + (-100)

  = 200 + 600 - [ 100 + (-100)]

  =200 + 600 - 0

  =800

b) 500 - 100 x3 + (-`13)

   =500 - 300 + (-13)

   =187

Answer 6

200 + 300 x 2 - 100 + ( - 100)

200 + 600 - 100 + (-100)

= 800 - 100 + ( - 100)

=    700 + (-100)

= 600

500 - 100 x 3+ ( - 13)

= 400 x 3  + (-13)

=  1200 + (- 13)

= 1187