Question

Tính nhanh

a; ( 191×5 - 109 ×5) + ( 624:4-296:4)

b; ( 45 + 75) × 66 +(75+45)×35

Answer 1

mik chỉ nêu cách lm

a) ((5*(191-109)))+((624-296)/4))

b)100*66+100*35

=100*(66+35)=

Answer 2

( 191 x 5 - 109 x 5 ) + ( 624 : 4 - 296 : 4 )

= [ ( 191 - 109 ) x 5 ] + [ ( 624 - 296 ) : 4 ]

= 82 x 5 + 82

= 82 x ( 5 + 1 ) 

= 82 x 6 

= 492

( 45 + 75 ) x 66 + ( 75 + 45 ) x 35

= ( 45 + 75 ) x ( 66 + 35 )

= 120 x 101

= 12120

hok tốt

Answer 3

Thanks!!!