Question

1,(54)-0,(81) giúp mình nhé

Answer 1

mk lấy xấp xỉ nhé

\(1,\left(54\right)\approx1,55\)

\(0,\left(81\right)\approx0,82\)

\(1,\left(54\right)-0\left(81\right)\approx1,55-0,82\approx0,73\)

hk tốt

Answer 2

\(1,\left(54\right)\approx2\)

\(0,\left(81\right)\approx1\)

\(1,\left(54\right)-0,\left(81\right)\approx2-1\approx1\)

hk tốt

Answer 3

\(1,\left(54\right)-0,\left(81\right)\)

\(=\left(1+54.\frac{1}{99}\right)-\left(81.\frac{1}{99}\right)\)

\(=\frac{17}{11}-\frac{9}{11}\)

\(=\frac{8}{11}\)