Question

Tinhd nhanh nếu có :

d) 89,23 : 18 + 90,77 : 18

Answer 1

89,23 : 18 + 90,77 : 18

= (89,23 + 90,77) : 18

= 180 : 18

= 10

Answer 2

\(d,89,23\div18+98,77\div18.\)

\(=89,23\times\frac{1}{18}+99,77\times\frac{1}{18}\)

\(=\frac{1}{18}\left(89,23+90,77\right)\)

\(=\frac{1}{18}.180=\frac{180}{18}=10\)

Answer 3

\(89,23:18+90,77:18\)

\(=\left(89,23+90,77\right):18\)

\(=180:18\)

\(=10\)

Answer 4

89,23 : 18 + 90,77 : 18

= ( 89,23 + 90,77 ) : 18

= 180 : 18 

= 10