Rounding down means whatever it is you go down, so even if it is 0.9, you'd round up. This should be used in circumstances such as seeing how many people can fit on a ride, and if half of a person fits but not the other half, the entire person doesn't fit.
Does mean round up or down?
"Round up" means "round to the next higher number". "Round down" means "round to the next lower number".
Does mean rounded up?
If people or animals are rounded up, someone gathers them together.
How do I round my answer?
Look to the next smallest place value, the digit to the right of the place value you're rounding to. For example, if you want to round to the nearest ten you'd look at the ones place. If the digit in the next smallest place value is less than five (0, 1, 2, 3, or 4), you leave the digit you want to round to as-is.
How do you explain rounding to a child?
Rounding numbers is a way of simplifying a number to make it easier to work with, especially when doing mental math. When rounding to the tens place, if the number in the ones place is 4 or below, you round down. If the number in the ones place is 5 or higher, you round up.