Question

Tính nhanh :

20,17 x 101 - 19,17 - 1

Answer 1

<20,17-1>.101-19,17=<19,17-19,17>.101=0☺️ ☺️ ☺️

Answer 2

bằng2017

Answer 3

Bằng : 100 nhé bn

hok tốt  ^_^

Answer 4

20.17 x 101 - 19.17 -1

= 20.17 x 101 - (19.17 + 1)

= 20.17 x 101 - 20.17

= 20.17 x (101-1)

= 20.17 x 100 = 2017