Question

What do you have to know before you can round a number?

Answer 1

when it's 0-4 then round-down and when 5-9 round-up

Answer 2

Answer:

You have to know the number after the decimal point

Example:

Round 2.5

You can only round up a number if the number after the decimal point it is higher than 5

So the rounded number would be = 3

Hope this helps