When rounding doo you round up or down on 4.5?

You round up.

My teachers always said if it’s .5 or above you round up and if it’s .4 or below you round down

How to Round Numbers?

Decide which is the last digit to keep.

Leave it the same if the next digit is less than 5 (rounding down)

But increase it by 1 if the next digit is 5 or more (rounding up)
We have 4.5

If we want rounding to the whole, then we look at tenth. We have 5, therefore rounding up

4.5 ≈ 5

What’s the question here? what have you been learning about?