When rounding to the nearest 2, 4, 5, 8, 10, 16, 20, 40 or 80, yes.
Otherwise no.
79.6 rounded to the nearest tens is 80. Then, 80 rounded to the nearest ones is 80.
80.0
80
80
75 rounded to the nearest ten is 80
80
79.6 rounded to the nearest tens is 80. Then, 80 rounded to the nearest ones is 80.
80.0
80
80
80
80
75 rounded to the nearest ten is 80
You would round it down... to 80.
80
80
80