Question

tính nhanh;43.11+48.89

Answer 1

43 x 11 + 48 x 89

= ( 43 + 5 ) x 11 + 48 x 89

= 48 x 11 + 48 x 89

= 48 x 100

= 4800 - 5 x 11

= 4800 - 55

= 4745

 

Answer 2

= 43 x 11 + 48 x 89 = 48 x 43 x ( 89 + 11 ) = 2064 x 100 = 206400 tic đúng nhé