Question

tính nhanh : 10 x 20 -100 x 75 + 10 x 80 - 100 x 25 

kban vs mk nha

Answer 1

10 . 20 - 100 . 75 + 10 . 80 + 100 . 25

= 10 . ( 20 + 80 ) - 100 . ( 75 + 25 )

= 10 . 100 - 100 . 100 

= 1000 - 10000

= - 9000

Answer 2

10 x 20 -100 x 75 + 10 x 80 - 100 x  25 

10. 10. 2 - 100. 75 + 10. 10. 8 - 100 .25

100.2 -100.75 +100.8 - 100.25

200 - 7500 + 800 - 2500

vô lý

Answer 3

10x20-100x75+10x80-100x25

200-7500+800-2500

-9000